its letter b the genetic drift because it is mechanism of evolution in which allele frequencies of a population change over generation due to chance.
Cystic fibrosis is a recessive genetic disease that encodes the CFTR protein, but some populations have a relatively high rate of cystic fibrosis carriers, which protects against severe dehydration and is an example of the heterozygote advantage that is present in Option D.
What is the heterozygote advantage?When the gene is present in a heterozygote state, the gene product benefits the individual rather than harming him or her, as in sickle cell anemia and cystic fibrosis. In sickle cell anemia, the heterozygote state protects the person from malaria, and in cystic fibrosis, it protects the person from dehydration.
Hence, Cystic fibrosis is a recessive genetic disease that encodes the CFTR protein, but some populations have a relatively high rate of cystic fibrosis carriers, which protects against severe dehydration and is an example of the heterozygote advantage that is present in Option D..
Learn more about the heterozygote advantage here.
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name two characteristics that all these animal share ( frog, buck, doves, lizard, dragonflies )
Answer:
They all have a beating heart, and a brain
Explanation:
Beating the heart and a brain is the two characteristics that all these animal shares frog, buck, doves, lizard, and dragonflies.
What are the different characteristics of animals?Frogs are cold-blooded animals and are classified into the class of amphibians, they are vertebrate animals with backbones.
The lizard was included in the class reptilia, they are creeping and burrowing terrestrial animals situated on the land, and also have scales on their body. Similar to the frog, they are also cold-blooded animals having a backbone.
The major classification of the animals is done by the presence of a backbone, which differentiates them in vertebrates and invertebrates.
Therefore, in the given question all the animals share common feature of having a heart and brain.
Learn more about animals, here:
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ROCK
Created from the
- of
in ______ over time.
Help me pls
Answer:
Sedimentary Rock:
Created from the deposition of sediment
in layers over time.
Explanation:
With the pressure that is created from the layers of rock, this causes the creation of Sedimentary rock.
Hope this helps :)
The DNA during interphase is in _____ strands called _____
PLEASE HELP ME PLEASEE!
Which sex would you expect to be the choosiest?
Answer:
Feamles but it depends what they're choosing from
Explanation:
help! If a virus has an incubation period of 12-24 months, then it is most likely --
my best guess would be LTBI (latent tuberculosis infection)
most incubation periods are in the range of 3 weeks to 3 months, though some cancer viruses have incubation periods of 10 years long. exc..
tuberculosis: 6-24 months
aids: 1-15 years
leukemia: 2–12 years
good luck!
The study of which trees monkeys feed in is part of the life sciences.
Please select the best answer from the choices provided
T
F
Answer:
True
Explanation:
Answer:
T
Explanation:
;}
Which best describes the structure of DNA?
A.It has a double helix with repeating bases
B.It has a triple helix with repeating bases
C.it has a double helix with a single base
B.It has a triple helix with a single base
Answer: A
Explanation:
The double helix describes the structure of DNA.Apr
which is false?
- digestion begins in the mouth
- The small intestine digest carbohydrates
- The large intestine absorbs amino acids
- the stomach involves mechanical digestion
Answer:
false...................
Answer:
The large intestine absorbs amino acids
-2 In a pasture ecosystem a large portion of the biomass is represented
pasture vegetation compared to animals that feed on these grasses.
illustrated by such a pasture ecosystem is called alan...
A food chain.
B food web.
с ecological pyramid.
D energy flow.
a
Explanation:
im not really sure about the answer i chosed but maybe yes
What is the main reason to put a telescope in space?
A.
It is much closer to the stars.
B.
It can receive star light that cannot reach Earth.
C.
Light reaching it is not affected by the movement of air.
D.
It can detect objects behind the moon.
Answer: D
Explanation:
The main reason we put telescopes into space is to get around the Earth's atmosphere so that we can get a clearer view of the planets, stars, and galaxies that we are studying. Our atmosphere acts like a protective blanket letting only some light through while blocking others.
I would appreciate help please thank you
Answer:
i am fairly sure the last option isn't true.. i hope i'm correct
A _____ is exhibited only when two are present together.
recessive allele
hybrid
purebred
dominant allele
Answer:
I believe it's a dominant allele
Explanation:
Recessive allele means one is present... A hybrid is the result of two different breeds breeding. A purebred is an organism that always passes down the same genetic makeup.
What are Purkinje fibers?
special valves that relay electrical impulses to
the ventricles, which cause contraction
special fibers that relay electrical impulses to
the atriums, which cause emptying
special valves that relay blood to the
ventricles, which cause contraction
special fibers that relay electrical impulses to
the ventricles, which cause contraction
DO NE
Answer: It's D aka Special fibers that relay electrical impulses to the ventricles, which cause contraction.
Explanation:
WILL GIVE BRAINLIEST!!!!!!
the last one I guess
Explanation:
i checked internet
Cell X
Cell w
Cell Y
Cell Z
Х
х
х
Cell Membrane
x x
х
х
Cell Wall
Chloroplasts
Х
х
DNA
х
х
х
Nucleus
Х
Х
х
Which cell that was viewed is most likely a prokaryote?
nucleus,cell membrane
Plant growth is the result of cells dividing during _____.
plss help
Answer:
Plant growth is the result of cells dividing during mitosis.
Explanation:
Mitosis is the process in which cells divide for cell growth or repair. All the cells, as a result of mitosis will have the same number of chromosomes as of the cell at the start.
Answer:
mitosis
Explanation:
Hope this helps
how do data collected from ice cores provide evidence for climate change.
Answer:
Explanation:
Ice cores can tell scientists about temperature, precipitation, atmospheric composition, volcanic activity, and even wind patterns. The thickness of each layer allows scientists to determine how much snow fell in the area during a particular year.
how does the process of translation convert information from a dna code to an rna code?
a. from a DNA code to an RNA code
b. from an amino acids code to a nucleic acid code
c. from an RNA code to a DNA code
d. from a nucleic acid code to an amino acid code
Answer:B
Explanation:
The nitrogen bases in DNA code for the sequence of amino acids that make up a protein
Answer:
its B
Explanation:
PLEASE HELP ME WITH SOME QUESTIONS
1. What is a convection current?
2. How do thermometers work?
Answer:
1.a current in a fluid that results from convection.
2.measures temperature through a glass tube sealed with mercury that expands or contracts as the temperature rises or falls.
Explanation:
Answer:
1.A convection current is a process that involves the movement of energy from one place to another. It is also called convection heat transfer. What is the reason that makes you feel hotter when placing hands above a campfire or when sitting next to it? Or, why is the movement of liquid so rapid when water is boiled in a pot? These things happen as a result of the Convection Currents.
Explanation:
2. A thermometer measures temperature through a glass tube sealed with mercury that expands or contracts as the temperature rises or falls. ... As temperatures rise, the mercury-filled bulb expands into the capillary tube. Its rate of expansion is calibrated on the glass scale.
brainpop newton's laws of motion worksheet answer key catagorize it answer
Answer:where the questions. cos
Explanation:
Which of the following is not an example of waking conscious
mind?
Select one:
a. Solving a math problem
b. Driving a Lamborghini
c. Writing an exam
d. Taking a power
nap
b. driving a Lamborghini
Answer:
option D is correct
Taking a power nap
hope it helps
The phase of mitosis that is characterized by the arrangement of all chromatids along the equator of the cell is called
punnett Square st. Patrick's Day worksheet... did anyone have the answers..ughh... so confusing!!
PLZ HELP ASAP
MARKING
RNA differs from DNA in that RNA
A.all of these
B.contains the nitrogenous base uracil
C.contains a different sugar molecule
E.is single-stranded
Answer:
A..they are all characteristics of RNA
Which one of the following does not have its outer orbit full?
a. argon
b. neon
c. krypton
d. lithium
Answer:
Lithium
Explanation:
It is group I, not group 0.
Which characteristic of life best describes the process of homeostasis?
responding to the environment
reproducing
growing and developing
using energy
Answer
A. responding to the environment
Answer:
and using energy
Explanation:
the guy on ed told me
The phase of mitosis that is characterized by the disappearance of the nuclear membrane is
Answer:
Prometaphase (late prophase)
Explanation:
Mitosis is the kind of cell division in which two genetically identical copies of a cell is formed from a cell. Mitosis comprises of stages which include prophase, metaphase, anaphase and telophase. Each phase is characterized by specific occurrences that all work together to achieve the main goal of forming two daughter cells.
According to this question, PROPHASE stage is the stage characterized by the condensation of chromatids into chromosomes, the disappearance of nucleolus and BREAKDOWN of NUCLEAR MEMBRANE.
7. Apply: Look carefully at the picture below and you will see an insect called a
katydid. Katydids evolved from grasshoppers through natural selection. Use
what you have learned to explain how this could have happened.
Answer: This description is an example of camouflage adaptations.
Explanation:
The grasshoppers are the insects which feed on plant parts and they are able to change their color with respect to their surrounding environment. For example, if they are living on the brown tree trunk they change their color to brown and on the green grass or green leaves they change to green to remain undetected by the predators. This way they are able to camouflage their predators this adaptation allows their survival in their environment with due course of natural selection. The phenotypic trait that is grasshopper is able to change its color increases the chances of survival of the grasshopper. Kaytids have evolved from grasshoppers means they have camouflage traits as that in parent grasshopper species. They have structure which blends with surrounding environment, that is they have wings that mimic that of pattern of leaf venation, also when they change the color to brown the shape of the body appears to be as that of stem. This structural adaptation help them to camouflage their predators.