The gamete cells contain 50% of the chromosomes found in the body cells of an organism after meiosis.
Meiosis is basically a type of cell division which occurs in the sexually reproducing organisms. This division is observed during the formation of gametes and results in the reduction of the chromosomes in the gametes.
The normal body cells in our body diploid in nature. This means that they contain two complete sets of chromosomes, that is, 23 pairs of chromosomes. When a gamete is formed due to meiotic division, only one half of the chromosome complement is passed on from the parent and therefore the germ cell will contain 50% of the chromosomes found in the body cells of an organism after meiosis.
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What does disease mean?
Answer:
(Desease) mean that its a flue..some of animals have deseases even humans and other.. example of deases are CANCER IN bones etc..)
Explanation:
Hope it helps!!
Answer:
The condition of malfunctioning or unusual functioning of body or organs is known as disease. it might be due to genetic, pathological or physical reasons or even due to lack of intake of proper diet and lack of enough sleep. it is classified into two types:
communicable and non communicable.
Why are identical twins rare?
Word Bank:
gene, chromosome, reproductive cell, identical twin, fraternal twin, trait, protein, variation.
Mention:
Explain how genes are passed on normally in humans.
Explain how genes are passed on in identical twins.
Explain why identical twins are rare.
Identical twins are rare because they are generated when a fertilized egg is divided into two zygotes and thus generate two different organisms having genetically identical material. Genes are passed on normally in humans due to the inheritance from parents to offspring, they (genes) are passed on in identical twins as copies in the egg cell.
What is the proportion of identical twins in nature?The proportion of identical twins in nature is relatively low in the order of 1 to 250, which inherit the same genes contained in homologous pairs of chromosomes, while fraternal twins denote the process of fertilization of two separate eggs to form different organisms. These genes generate different proteins that will lead to different traits.
Therefore, with this data, we can see that the proportion of identical twins in nature is low because the division of the egg cell after fertilization cell is a rare process.
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What is the role of producers in environment ?
Graph 5- Survivorship Curves Using your textbook or an online resource, determine the differences between K-selected species and r-selected species. Next, use the graph below to answer question 24.
The difference between K-selected species and R-Selected species is that the former posses a type I survivorship curve while the latter has type III survivorship curve.
A Type III survival curve is more likely to be present in K-selected species. Type I survivorship curves are typical in r-selected species. Graphs called survival curves provide a visual representation of the proportion of a population that is still alive at various ages. R-Selected species have evolved to survive in unstable and unpredictable surroundings. They produce a great number of tiny young.
The offspring of r-selected animals are comparatively self-sufficient at birth and do not get a lot of resources or parental care. Examples of r-selected species include plants like the dandelion and marine creatures like jellyfish.
Species chosen by K are adapted to predictable, steady surroundings. K-selected species tend to have populations that are roughly at their carrying capacity. These species have long generation times, and larger but fewer offspring overall. An example of a K-selected species would be an elephant or a human.
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How will the positive and negative transcription factor help maintain the homeostasis of the body system. Explain with an example
The positive transcription factor will help in maintaining the stimulus for homeostasis or even accelerate it. Whereas the negative transcription factor will oppose the effect of the stimulus, it can either increase it or decrease it.
Homeostasis is the maintenance of a steady and equilibrated physical, chemical and internal state of the body. The example of positive transcription factor is: activation of one clotting factor in the body initiates a cascade for the activation of all the other clotting factors.
Negative transcription factor has the example of blood glucose levels of the body. If the level increase transcription factors cause the release of insulin from the pancreatic cells to maintain the homeostasis.
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Which of the following is an example of positive feedback
A Body shivers to generate heat
B Blood vessels dilate to lower temperature
Blood clotting
D Regulation of blood sugar
Answer:
a the body shivers to generate heat
Question:
Which of the following is an example of positive feedback?
Answer: CORRECT (SELECTED)
A blood clot inducing more blood clotting.
Explanation:
Positive feedback loops amplify the starting signal. In this case, the clotting of blood stimulates more blood to clot.
The numerical ratio of velocity to speed of a moving object is
•always less than 1
•always equal to 1
•always more than 1
• equal or less than 1
Answer: Correct option (d) Either less than or equal to one. Explanation: velocity/speed ≤ 1Read more on
Explanation:
Explain how an ecosystem that has experienced a disruptive event, such as a volcano, recovers. Read More >>
An ecosystem that has experienced a disruptive event, such as a volcanic eruption, will take time to recover from the effects of the disruption. The recovery process of an ecosystem is a complex, interconnected process between the biotic and abiotic components of a system. The recovery process that follows a disturbance varies depending on the type of disruption and the environment in which it occurs.
When a volcanic eruption occurs, it can release a great deal of ash and debris into the environment, and the effects can be devastating. The ash and debris can severely damage the terrestrial and aquatic ecosystems in the surrounding area, resulting in a loss of habitat, food sources, and other important resources. Additionally, the ash and debris can block sunlight and reduce photosynthesis, which can lead to a decrease in plant growth and a disruption of the food web.
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An immune response ends with the organism developing immunity for all pathogens *
True
False
Answer:False
Explanation:
Like zombies something new will become a pathogen and for some the effects can not be completely immune.
A botanist crosses two pink-flowered plants. The cross is a case of intermediate inheritance that involves alleles that were not clearly dominant or recessive and could make red-, pink-, and white-flowered plants. If four plants are produced from the cross, what is the expected number of white-flowered plants?
A-1
B-0
C-3
D-2
Is calico genetically dominant or recessive?
The calico cat displays a mixture of red- and black-based colors, depending on which of its two X chromosomes has been inactivated. The allele coding for orange hair color is dominant, while the allele for black color is recessive - although this doesn`t matter much since only one allele is expressed.
Because the genetic determination of coat colors in calico cats is linked to the X chromosome, calicoes are nearly always female, with one color linked to the maternal X chromosome and a second color linked to the paternal X chromosome.
To create a calico (or tortoise-shell) pattern, one of the X chromosomes must carry the black gene and the other the orange gene. If a black male and an orange female mate, the result will be a half-black and half-orange female offspring-a calico. A black female and an orange male will also produce a calico female.
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There is a kind of snake that can be born with red, yellow, or green skin. Eagles hunt these snakes, but snakes that are the same color as their environment are harder for the eagles to see and catch.
Explain how abiotic factors can have influence on the survival for individuals through natural selection.
Selection: Organisms live within ecosystems, which are made up of various biotic and abiotic factors. These factors contribute to selecting which variations provide the individual with an increased chance of surviving. ... Examples of abiotic factors include temperature, shelter, sunlight, water and nutrients.
Answer:
Biotic and abiotic factors are the environmental conditions that the organisms have to face to live in a specified environment.
Abiotic factors
Abiotic factors are the physical and chemical conditions of an environment. For example : heat, salinity, pressure, light, wind, pH ...
Biotic factors
Biotic factors are all the biological conditions of an environment for a specie/taxa. It can include prey and predator abundance, available food amount, available space, intra and interspecific competition...
The development of organims is under the control of abiotic factors. Some are adapted to heat, cold etc ... The abiotic factors will define which organisms are able or not to live in a specified place.
The living organisms will constitute the biotic factors, which define if and how can an organism live in a specified environment.
So, the abiotic factors are controling the biotic factors of an environment.
Please mark me as brainliestI need help knowing what the independent variable is to this
In an experiment, the independent variable is the color or the wavelength of the light. The dependent variable is the amount of absorption.
What is Blue light therapy?Blue light therapy is also known as photodynamic therapy. It is a type of light treatment that is used to treat diseased or damaged skin. It uses medicines called photosensitizing agents along with specific wavelengths of blue light to destroy abnormal skin cells while leaving the surrounding tissue unharmed.
Is the color of light a dependent variable?In an experiment to determine the absorption of light of different colors, the independent variable is the color or the wavelength of the light. The dependent variable is the amount of absorption. The independent variable is the variable that the experimenter changes on their own.
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Most of the genetic disorders you have learned about are the result of a change in DNA sequence, as with cystic fibrosis, or the presence of
an extra chromosome, as with Down syndrome. The exception is Turner's syndrome. Women with Turner's syndrome have only 45 chromosomes. They are missing an X chromosome. This disorder is the only case in which a person can survive with one less chromosome.
What does this tell you about
how genetic information is inherited in humans?
Please help
The most genetic information is inherited in humans on the x-chromosome.
In bacteria, each messenger RNA (mRNA) serves as a template for the production of one or more particular proteins. Messenger RNAs (mRNAs) carry information from DNA. Translation is the process by which the primary amino acid sequence of a protein is established from the nucleotide sequence of an mRNA molecule.
Their mother passes one copy on to them through the egg, while their father passes the other one along sperm. Each egg and sperm have a single set of 23 chromosomes. Two copies of each chromosome and two copies of each gene are present when the sperm fertilizes the egg, resulting in the formation of an embryo.
Three separate processes responsible for the genetic diversity.
mutationrecombination,gene immigrationTo learn more about Genetics :
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Mucous secretions in the respiratory tract inhibit microbial infections. These secretions are produced by which of the following tissue types found in the lungs ?
A. Epithelial
B. Glomerulus
Option A: Epithelial tissue types found in the lungs are responsible for mucous secretion in the lungs.
About 30% of the respiratory epithelium's total cell population are goblet cells. They create mucinogen, which when released into an aqueous environment becomes hydrated and is known as mucin. As soon as the mucin is combined with additional components in the wet environment, it is referred to as mucus. Thus, option A is the appropriate choice.
The first line of defense against the onslaught of irritants that 500 L of air an hour of air inhalation puts into the lungs is mucus secretion. The airway epithelium can be harmed by the gases, microorganisms, soot, and dust that are inhaled. As a result, mucus secretion happens extraordinarily quickly—in only a few milliseconds.
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How much greater are the discharge rates than the recharge rates of the Ogallala Aquifer?
The recharge rate of the Ogallala Aquifer is estimated to be between 0.1 and 0.2 inches per year.
What is Ogallala Aquifer?
The Ogallala Aquifer is a vast underground aquifer system located in the Great Plains region of the United States. It is one of the world's largest aquifers, covering an area of around 174,000 square miles across eight states, from South Dakota to Texas. It is an important source of water for agricultural, industrial, and municipal uses.
The discharge rate is estimated to be between 0.3 and 0.6 inches per year. This means that the discharge rate is between three and six times greater than the recharge rate.
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Alleles are different versions of:
Genotypes
Genes
Chromosomes
Phenotypes
Answer:
Genes
Explanation:
Explain how artificial selection could lead to a change?
Answer:
While artificial selection is certainly a form of experimental evolution, often the meaning of the term 'experimental evolution' is confined to controlled natural selection, excluding artificial selection
Explanation:
What are the 4 most important environmental factors that influence bacterial growth?
The 4 most important environmental factors that influence bacterial growth are oxygen, temperature, water and pH.
Bacteria are unicellular, prokaryotic microorganisms that are able to survive in a lot of different conditions. They have different shapes, different modes of nutrition and lack a nucleus and membrane bound cell organelles.
The four most important environmental factors that influence the growth of bacteria are oxygen, temperature, water and pH. Different types of bacteria types need different temperatures in order to grow. Some can survive in cold temperatures while some can even survive in very high temperatures.
Most of the bacteria survive in neutral or less acidic environments but also a lot of bacteria are able to survive in a very wide spectrum of pH. Some bacteria do not require oxygen and are hence called anaerobic while some type of bacteria need oxygen to grow and are called aerobic. Water is also required by bacteria and it boosts their growth.
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The illustration shows structures into animals these are known as??? helpp
how does your adrenal gland and pineal gland help you maintain homeostasis?
The adrenal gland helps to maintain homeostasis by producing hormones that regulate metabolism, stress response, and other bodily processes.
What exactly is homeostasis?
Homeostasis is the ability of a living organism or system to regulate its internal environment to maintain a stable equilibrium, such as temperature or pH, despite changes in external conditions. It is a crucial factor in allowing organisms to function normally in their environment.
The pineal gland helps to maintain homeostasis by secreting melatonin which helps to regulate the body’s circadian rhythm and helps to regulate sleep and wake cycles. Together, these two glands help to keep the body in a balanced, homeostatic state.
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What is the role of nitrogen-fixing organisms?
Answer:
Nitrogen-fixing bacteria, microorganisms capable of transforming atmospheric nitrogen into fixed nitrogen.More than 90 percent of all nitrogen fixation is effected by these organisms, which thus play an important role in the nitrogen cycle.Drag each label to the correct location.
Geologists study a variety of other characteristics to identify minerals, such as texture, magnetism, streak plate markings, density, and specific gravity. Use the information you have already gathered, in addition to a few other properties of minerals, to identify the seven minerals in the chart below. If you need help using the graduated cylinder or scale, consult the lab instruments and measurements guide. If you do not have access to the seven minerals given, use this resource to complete the chart.
Answer:
quartz gypsum pyrite magnetite graphite fluorite talc
Explanation:
^^^biology question
Answer:
A 40 percent
Explanation:
If guanine is 10 percent this means that cytosine will also be 10.thats a total of 20 percent. We will then have 80 percent remaining for thymine and adenine. As we know adenine make a bond with thymine so 80 divide by 2 is 40 percent for each
Answer:
90%
Explanation: correct awnser is b 90% because if 10% is in G then the other 90% is in A
giving a large number of points to whoever answers this
31. The cell membrane is primarily made up of these - E. phospholipids
32. The hydrophilic part of a phospholipid - A. phospholipid head
33. The hydrophobic part of a phospholipid - H. phospholipid tail
34. Protein that facilitates passive transport - D. channel protein
35. Protein that facilitates active transport - J. carrier protein
36. Molecule that stabilizes the membrane - G. cholesterol
37. Molecule that aids in cell recognition and signaling - I. carbohydrate molecule
38. A substance that can undergo facilitated diffusion - C. negatively charged ions
39. A substance that undergoes active transport - F. positively charged ions
40. Cellular energy needed for active transport - B. ATP
What are phospholipids?Phospholipids are the main lipid that is found in the cell membrane.
The structure of phospholipids is that they have a hydrophilic head group and a hydrophobic tail.
They are arranged in the form of bilayers in cell membranes.
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A tumor that can be removed or carved out is part of what type of cancer whats the answer!!! for a test question
Answer:
im not really sure but i think its ovarian cancer if thats in one of your options.. maybe skin cancer if its not in ur options.
Explanation:
What is an example of a behavioral adaptation in animals?
Explanation:
Behavioral adaptation is something an animal does usually in response to some sort of external stimulus in order to survive. Hibernating during winter is an example of a behavioral adaptation,this is common among bears.
what do you think? So why don't t apes walk upright like us?
Apes were basically monkeys. They walk on their hands and feet but crouched. There's a bunch of theories saying that humans evolved from apes. As apes evolved, they started walking upright.
Cells actively involved in secreting proteins would contain large numbers or quantities of ________.
Cells producing huge portions of proteins would have numerous nucleoli. One potential explanation that the proteome is such an ample deal bigger than the genome is that mRNAs can be grafted in elective ways in this manner expanding the Digi of items paid from a clear rate.
Ribosomes are especially plentiful in cells that orchestrate a lot of protein. For instance, the pancreas is answerable for making a few stomach-related catalysts and the cells that produce these compounds contain numerous ribosomes.
Cells that successfully produce proteins have various ribosomes in the cytoplasm, which give it a dull blue tone (basophilia) when stained with Wright stain. Cytoplasmic basophilia is especially unmistakable in erythroid forerunner cells when hemoglobin and other cell parts are effectively orchestrated.
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