Answer:
25%
Explanation:
I know this for sure
Sickle cell anemia is caused by a mutation that alters red blood cells. HELP ME PLZZ!!!
Answer:
In Sickle Cell Anemia:
Mutation that occurs in DNA is due to the substitution of thymine base by adenine base. Change in mRNA consists of a change of the GAA codon to GUA, which codes for a different amino acid. The change that occurs in the synthesized protein is the substitution of glutamic acid by valine, the consequence of which is the structural alteration of this protein.Explanation:
Sickle cell anemia is a disease that is transmitted from parent to child in an autosomal recessive inheritance pattern. It is due to a mutation that is capable of altering the shape of the erythrocyte, as well as its ability to circulate and carry oxygen.
First, a puntual genetic mutation occurs, where the sequence of DNA bases that determines the synthesis of the hemoglobin β-chain, by suffering the substitution of thymine by an adenine: CTT → CAT.The transcription of this altered sequence to mRNA results in the change of the GAA codon to GUA, which encodes a different amino acid.Once the β-chain is synthesized, in its structure there is a change in the amino acid sequence, due to the substitution of glutamic acid by valine.The interaction of valine with the other amino acids of the protein promotes a structural change, responsible for the deformation of the red blood cell that characterizes sickle cell anemia.
Asexual reproduction results in -
A. offspring that look exactly like a single parent.
B. offspring that look different than a single parent.
C. offspring that look like a combination of two parents.
D. offspring that look like half of one parent, half of another.
Answer:
A. offspring that look exactly like a single parent.
Explanation:
Asexual reproduction is a mode of reproduction in which a new offspring is produced by a single parent which is why I think the correct option is A.
I hope this helped :)
What is the function of each of these structures in the cell membrane? a) phospholipid bilayer b) peripheral protein c) integral protein d) glycolipid & glycoprotein e) cholesterol
Answer:
The correct answers are described in the Explanation section.
Explanation:
The function of the structures in the cell membrane are as follows:
a) phospholipid bilayer: comprised of fatty acids and alcohol, the phospholipid bilayer acts as a hydrophobic barrier to avoid the uncontrolled transport of molecules and ions.
b) peripheral protein: they are proteins present in the external surface of the cell membrane. This proteins form temporary bonds between the cells and other molecules, attaching and detaching at specific times.
c) integral protein: this proteins have one part of its structure in the surface and other part within the cell membrane. They have different roles, including: receptors, transporters, linkers, channels, among others.
d) glycolipid & glycoprotein: proteins that have carbohydrate-bearing portions in its extracellular environment. They maintain the stability of the cell membrane and facilitate cellular recognition.
e) cholesterol: cholesterol structure helps to the packing of the phospholipids, which restricts the passage of the molecules.
What's that answer I don't understand?
ima mannnnnnnnnnnnnnnnnnnn
How many people can play Tennis at one time on the court ?
Answer:
two people can play on the court
how does geographic isolation cause an increase in differences between two groups
Answer:
What was once a continuous population is divided into two or more smaller populations. This can occur when rivers change course, mountains rise, continents drift, or organisms migrate. The geographic barrier isn't necessarily a physical barrier that separates two or more groups of organisms. It might just be unfavorable habitat between the two populations that keeps them from mating with one another.
Explanation:
PLEASE HELP! First answer gets brainliest!!!
1. What type of plate boundaries are A, C, and D?
2. What type of crustal feature(s) will form at plate boundary D?
Answer:
transform boundaries are zones or plates a slide past each other c move together causing one to go beneath the other b move apart leaving a gap d
living things use food they eat to get______
Answer:
energy
Explanation:
can someone please help??
the rose experiment to answer the question. What are the independent and dependent variables?
What is a DNA fingerprint? (FORENSICS)
Explanation:
It is used to establish a link between the biological evidence and a suspect in a crime investigation.
What is an event of a convention current in the air
Answer:
Convection drives the circulation of air in the earth’s atmosphere. The sun heats the air near the earth’s equator, which becomes less dense and rises upward. As it rises, it cools and becomes less dense than the air around it, spreading out and descending toward the equator again.
Explanation:
Convergent evolution is a process where organisms independently evolve traits. Some molecular data place the giant panda in the bear family (Ursidae) but place the lesser panda in the raccoon family (Procyonidae). Consequently, the morphological similarities of these two species are probably due to
Answer:
analogous structures
Explanation:
Analogous structures play similar and/or identical functions in unrelated organisms. For example, moths and bats both have wings, even though they aren't related. Convergent evolution is a process that generates analogous structures in organisms that don't share a common ancestor with such structures. Moreover, homo-logous structures are shared traits between organisms that share a common ancestor. On the other hand, divergent evolution is a process associated with the accumulation of phenotypic differences between organisms within a species, which eventually lead to speciation.
This is a change in genetic makeup of a population or species over time
Answer:
Mutation
Explanation:
Mutation change the genetic makeup of a population of species over time.
An example is the immunity of plasmodium parasite to chloroquine without time.
Answer: mutation
extra words cause it wasnt long enough
sweet taste is felt earlier than the
witter taste, why.
->
Answer:
Because our taste receptors recognise sweet taste faster than bitter taste.
because the taste receptors for tasting sweetness are at the tip of your tongue while the receptors for tasting bitterness are at the back of the tongue
Which of the following statements BEST explains the relationship between microscopic organisms like bacteria and amoebas and their environment? O Microscopic organisms do not have to compete for abiotic factors such as space or water. O Microscopic organisms are affected by changes in their nonliving environment, such as changes in temperature or pH. O None of these are true, O Microscopic organisms always take shelter in other living organisms.
Answer:
Microscopic organisms are affected by changing in thier non living environment.
Explanation:
e.g bacterial internal osmotic gradient changes due to the changing in external water concentration so as for amoeba.
Two basic tasks that every cell must accomplish are to produce energy and remove waste.
Answer:what do you mean. Do you want me to list two facts?
Explanation:
What is the definition for "hypothesis"?
Answer:a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
Explanation: time to crown the king please
which of the following lists correctly summarizes the main function of proteins in the human body? (4 points)
Answer:
Powering movement, structural support, hormone production, antibody and enzyme production
How does the picture tie into the poem poem by dickinson
Answer:
wheres the picture
Explanation:
Jonas and his family are moving to another part of the city. As Jonas, his brother, and his Dad were driving one of the trucks filled with furniture to their new home, Jonas noticed that the truck seemed to take longer to stop now that it was heavier with the furniture. Which Newton's Law explains why this happens?
Answer:
Newton's 2nd Law of Motion
Explanation:
A force applied to an object at rest causes it to accelerate in the direction of the force. It is easier for the empty truck to stop than a full truck, because the full truck has more mass than the empty one.
This phenomenon is explained by the law of inertia i.e. the first law of Newton.
What is Newtons's first law?According to Newton's first law, unless pushed to alter its motion and direction by the operation of an external force, every object will continue to be at rest or in uniform motion in a straight line. It is also known as the law of inertia.
A body's inertia is a quality that makes it resist changes to its state. The amount of a body's inertia in translational motion is determined by its mass. A heavier body's consistent motion or state of rest is challenging to alter, and the opposite is true for lighter bodies. This is why the truck filled with furniture takes longer to stop.
Thus, when Jonas noticed that the truck seemed to take longer to stop now that it was heavier with the furniture. It is explained by the first law of motion (law of inertia).
Learn more about laws of motion, here:
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Select the correct answer.
What is the primary effect of ozone depletion?
1Harmful substances will be added to the air.
2Water will be contaminated
3Harmful ultraviolet (UV) rays will enter the Earth's atmosphere.
4Land quality will be degraded.
Answer:
1 nowwwwwwwwwwwwwwwwwwwww nnooooooowwwwwwww
Answer:
The answer is #3 or C.
Explanation:
Ozone layer depletion causes increased UV radiation levels at the Earth's surface, which is damaging to human health. Negative effects include increases in certain types of skin cancers, eye cataracts and immune deficiency disorders.
Which pair shows the chromosome numbers in human cells both before and after meiosis?
O 46 and 46
O 23 and 23
O 23 and 46
O 46 and 23
How does the work of the National Oceanic and Atmospheric Administration (NOAA) help people?
A. They analyze seismic data and make predictions of future natural diasters.
B. They provide funding for areas damaged by natural disasters.
C. They evacuate an area when a flood or landslide occurs.
D. They monitor weather conditions and send out flood warnings.
Answer:
its D :)
Explanation:
i took the test
Answer: Guys it is actually D. They monitor weather conditions and send out flood warnings.
Explanation:
Becaue NOAA provides timely and reliable information based on sound science to communities and businesses every day. From daily weather forecasts, severe storm warnings, and climate monitoring to fisheries management, coastal restoration and supporting marine commerce, Americans rely on NOAA. (I know that because I do a lot of reasearch for in High School!)
___ describes how much energy an earthquake releases
Answer:
Magnitude
Explanation:
Magnitude is expressed in whole numbers and decimal fractions. For example, a magnitude 5.3 is a moderate earthquake, and a 6.3 is a strong earthquake. Because of the logarithmic basis of the scale, each whole number increase in magnitude represents a tenfold increase in measured amplitude as measured on a seismogram.
If an organism is produced by sexual reproduction,
what percentage of its genes comes from its father?
A.100%
b. 50%
C.25%
d. 0%
Answer:
50%
Explanation:
could someone please help? IVE LITERALLY BEEN CRYING CUZ I CANT DO THIS
The Punnett square is for a test cross of two mice that were purebred for two different traits. What will their offspring be? Fill in the white boxes of the Punnett square with all possible offspring genotypes.
Answer:
Hope it helps DEAR
Explanation:
Each box in the Punnet square should have BbEe in them. Yes, all of them contain this possible offspring genotype.
Explanation:
A mouse with black fur and one with white fur are being bred. Black fur is BBEE and white fur is bbee. Hence, when listing them on the Punnet square, the genotypes will be heterozygous, since there are possible traits of each fur color
Make the list of the events of mitosis
Answer:
include chromosome condensation, formation of the mitotic spindle, and attachment of chromosomes to the spindle microtubules. Sister chromatids then separate from each other and move to opposite poles of the spindle, followed by the formation of daughter nuclei.
The size of your brain continues to grow your entire life.
A. true
B. false
Answer: B
Explanation:
1) Gregor Mendel created the law of independent assortment, that genes are distributed from parent to offspring independently of only another. Which characteristic of Meiosis primarily causes this, and what phase does it occur during?
a. Homologous pairs form and align, during Interphase
b. Crossing over occurs between Homologs, during Prophase 1
c. Meiosis enters a second round of splitting, during Prophase 2
d. Chromosomes are separated into 4 separate cells, during Anaphase 2
2) Which of the following is a Homo-zygous Genotype?
a. GG
b. Gg
c. gg
d. both A and C
3) A red flower (RR) is crossed with a red flower (rr). What are the chances for each type of offspring by GENOTYPE.
a. 25% RR, 50% Rr, 25% rr
b. 50% Rr, 50% rr
c. 100% Rr
d. 100% Red offspring
4) In Genetics, Dominant and Recessive are terms used to describe the relative strength of a specific trait. Which of the following is true for the term “recessive”?
a. Recessive genes can be masked by dominant genes
b. Recessive genes are always visible
c. In order to have a recessive trait, your parents must display that trait
d. Recessive genes show up later in life
5) Two Monsters, Hagatha and Urman, are expecting a child together. Hagatha is Hetero-zygous for Sharp claws, while Urman is Homo-zygous Recessive for Dull claws. Which of the following correctly identifies the Genotypes of both monsters? (use D or d to represent claw alleles)
a. Hagatha is Dd, Urman is dd
b. Hagatha is Dd, Urman is DD
c. Hagatha is DD, Urman is Dd
d. Hagatha is DD, Urman is dd
2 = d
3 = a
4 = a
5 = a
I am not so familiar with 1 and 3 sry
Homzygous means two identical alleles so a and c are both homzygous
recessive genes are not expressed if a dominant allele is present but with be expressed if the no dominant allele is present.
If you do a cross test you can determine the percentage.
Hagatha is heterozygous meaning non identical allele like Dd or dD and the other is homzygous recessive meaning that it has identical allele like DD or dd but it's recessive so it's dd.
I hope I helped you helped you enough