Answers
Related Questions
Directional selection only occurs in response to naturally occurring events.
Please select the best answer from the choices provided
Тrue
False
Answers
Answer:
False
Explanation:
Directional selection is a force in nature that causes a population to evolve towards one end of a trait spectrum. This change happens gradually and is hard to notice over a short period of time. This change is consistent and constant.
Of all the animals in the animal kingdom which one(s) would have the best chance for survival in mountains?
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Answer & explanation:
Mountains are large formations of land at high altitudes, where conditions are often difficult. For example, cold weather and food shortages.
In the highest areas of the mountains, animals such as vultures, eagles, hawks and other birds of prey usually prevail.
In addition, it is common for the sides of the mountains to be covered with forests. In these areas it is possible to observe the predominance of animals such as moose, goats, sheep, skunks, llamas and lynx. This group has good climbing skills and manages to stay in the side of the mountains and in some high areas (not as high as the previous group).
Meanwhile, in the lower parts of the mountains, where the forest is denser, it is possible to observe the predominance of snakes, wolves, marmots, foxes, etc.
Which type of minerals do you need in lesser amounts?
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Answer:
Trace minerals are those minerals which we need in lesser amount for our body which includes iron, copper, zinc, cobalt, selenium etc.
hope it helps!
All the following will give people an indication of your character EXCEPT
Ohow you are dressed.
your body type.
the language you use.
whether you are on time or not.
Brainly if correct 50 points
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Which trend in hominid evolution can be supported by fossil evidence?
Walking upright
Use of tools
Increased intelligence
Decorating cave walls
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You can make a case for all of them, but for three of them indirectly.
But the answer, I think, is walking upright.
You can look at the pelvic bones and femur orientation in the hips. You can also look at the way the skull sits on the vertebra.
Chimpanzees have a skull that sits more downward, because they walk on all fours most of the time. While humans have skulls that sit more horizontally on the vertebra, which allows us to see out on the horizon more easily. We can do that because we stand on two feet.
I hope that helps.
Which of the following is/are true about eukaryotic transcription?
A) RNA polymerases bind directly to the core promoter (TATA box)
B) Transcription factors are required for RNA polymerase ll-dependent transcription
C) RNA polymerase ll transcribes the protein-coding genes
D) Poly-A tail is the last part of transcript synthesis by RNA polymerase ll.
E) rho factor participates in transcription termination
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Answer:
Option B is true (Transcription factors are required for RNA polymerase ll-dependent transcription)Explanation:
Option B is correct because many different transcription factors are involved in the eukaryotic transcription, particularly genes transcribe by RNA polymerase II. TFIID, A, B, F, E, and H are general or basal transcription factors of human.
Option A is wrong because RNA polymerase II first bind with the general transcription factor, TFIID. TFIID recognise the TATA box and forms a platform for TFIIB binding.
Option C is wrong because RNA polymerase II transcribe protein coding genes but it also transcribe small nuclear RNAs (snRNAs).
Option D is incorrect because transcription of poly-A tail is synthesized by template-independent RNA polymerase called poly(A) polymerase.
Option E is also incorrect- rho factor or rho-dependent termination is used by bacterial transcription termination process.
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Answer this plzz!!!
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Which of the earths sphere is by far the largest?
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The solid Earth, the largest of Earth's four major spheres. The thin, rocky outer layer of earth and is divided into oceanic and continental crust.
1. I represent the number of protons in the nucleus of an element.
Pls tell me the answer its for a word search?!?!?!
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Answer:
Atomic Number
Explanation:
The atomic number gives you the number of protons in a given element.
Interphase lasts for
of a cell's life
98%
80%
50%
20%
Please help I need help nowww pleaseeeeeee
Answers
Answer:
80%
Explanation:
Which cellular process creates energy?
A. The conversion of ADP to ATP
B. The breaking of the chemical bond between the 2nd and 3rd phosphate
molecules in ATP.
C. The breaking of lipid chains.
D. The transportation of ions across the membrane.
Thank you!!
Answers
Answer:
B. The breaking of the chemical bond between the 2nd and 3rd phosphate
molecules in ATP.
Answer:
The conversion of ADP to ATP if I remember correctly.
While Congress has the power to create new laws, they can be vetoed by the President. In addition, the Executive Branch must enforce these laws. What two
different constitutional principles are demonstrated by these relationships?
Select one:
A
checks and balances and separation of powers
B.
separation of powers and eminent domain
C
federal supremacy and due process
D.
separation of powers and quartering of troops
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Answer:
A, Checks and balances and separation of powers.
Explanation:
Answer:
The correct answer is:
checks and balances and separation of powers
Explanation:
The system of checks and balances refers to instances in which the powers of the branches of government overlap, such as the Executive and the Legislative branch both having some power over the acts passed by Congress. Separation of Powers refers to instances in which separate branches have completely separate responsibilities, as in creating, interpreting, and enforcing the laws. Both of these doctrines are in place to ensure no branch gains too much power.
The diet of leaf-cutter ants is principally
a. leaves
b. fungus
c. saliva-coated leaves
d. fungus-treated leaves
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Answer:
it would be B.
Explanation:
Answer:
b. fungus
Explanation:
Which would a microscope be LEAST useful in studying?
A. spider
B. amoeba
C. bacterium
D. paramecium
Answers
Answer:
A
Explanation:
spiders can be seen with the naked eye
Answer:
A
Explanation:
A spider is large enough to see and observe without a microscope. Bacteria, amoeba and paramecium are all very tiny, and can’t be seen with just our eyes. To see these things, we would need a microscope. Therefore, a microscope would be the least useful when studying A: a spider.
Mutations are triggered by
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Answer:
Mutations can also be caused by exposure to specific chemicals or radiation.
Explanation:
(mark as brainliest please)
Answer:
mutations can be triggered by errors during DNA replication, but also environmental contributions, such as uv light from the sun.
Describe a positive feedback cycle produced by overgrazing
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Answer:
Increased damage to soils and natural communities and lands productivity.
A(n)
is a cellular structure that performs a
specific function in the cell.
Answers
Answer:
organelle
Explanation:
Answer:
organelle
Explanation:
each organelle within a cell has a very specific function in the cells role.
hope this helps please mark brainliest!!!
The fastest speed at which we might commu-
nicate with another technological civilization
among the stars (according to our present un-
derstanding of science) is
1. the orbital speed of the Earth.
2. instantly (as fast as we want) if we only
knew where they were located.
3. the speed of light.
4. the speed of the Voyager spacecraft
(which is typical of our space probes).
5. the speed of sound (the natural speed for
messages).
Answers
Answer:
The answer is Number 3. The speed of light
Independent assortment is the exchange of genetic material between
homologous chromosomes.
True Or False
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Answer:
False
Explanation:
According to Gregor Mendel in his law of INDEPENDENT ASSORTMENT, independent assortment of genes is a phenomenon whereby the segregation of the alleles of one gene into gametes occurs independently of the alleles of another gene i.e. their segregation does not affect/influence one another. Independent assortment occurs in the Metaphase 1 of meiosis 1, where homologous chromosomes randomly align at the equator of the cell. This random orientation of homologous chromosomes determines which chromosome will separate into which gamete.
According to the question, the exchange of genetic material between homologous chromosomes is termed CROSSING-OVER. Crossing over or Recombination occurs during the Prophase I state of meiosis I, where non-sister chromatids of homologous chromosomes exchange a portion of their gene.
Hence, the answer is false because the exchange of genetic material between homologous chromosomes is crossing-over.
Everyone in Squidward’s family has light blue skin, which is the dominant trait for body color in his hometown of Squid Valley. His family brags that they are a “purebred” line. He recently married a nice girl who has light green skin, which is a recessive trait. Use a Punnett square to determine the possibilities that would result if Squidward and his new bride had children.
List the possible genotypes and phenotypes for their children. *
Can i please have a explenation
Answers
All their children will have heterozygous genes because squidward is "purebred", or homozygous dominant. His wife has to be homozygous recessive for a recessive trait to show up. Every time you cross a homozygous dominant trait with a homozygous recessive trait, you will get heterozygous kids. This means all of them will have light blue skin.
Study the image.
Which best describes what the picture shows?
an organism
a community
a niche
a population
Answers
Answer: a community
Explanation:
an organism is one
a community is a small group
a niche is what the animal does
a population is the entire species
You create a punnett square to determine the probability of hair color being passed to
offspring. Brown hair is dominant. Blond hair is recessive. Both parents have brown hair.
Both parents are heterozygous. What is the probability that the offspring will also have
brown hair?
ofteprings Brown hair to de
Answers
Answer:
75%, or 3/4's
Explanation:
Parent's genotypes are Bb because they are homozygous & brown hair is dominant. Cross this, and you get the genotypes of the offspring: BB, Bb, Bb, and bb. The proability that offspring will also have brown hair is 3 out of these 4 genotypes, so 75%.
Animal-like protists, such as Amoeba and Paramecium.
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Answer:
Yes Amoeba and Paramecium are considered as animal-like protists
Explanation:
Amoeba and paramecium are considered to be animal-like protists because they are able to move through their habitat, and they gain energy from other sources.
Which claim is supported by significant scientific research?
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Intense competition would most likely occur between?
two species that live in different forests but eat the same foods.
two species that live in different forests and eat different foods.
two species that live in the same forest but eat different foods.
two species that live in the same forest and eat the same foods.
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Answer:
Two species that live in the same forest but eat the same foods because, they are competing for the same exact things in the same area. Thus making it difficult if one obtains food and the other does not have anything left to get.
Explanation:
In snapdragons, flower color is determined by a gene with two alleles. Red flower color (R) shows incomplete dominance over the gene for white flower color (R'). A scientist is observing the genes and genotype of a snapdragon population. Which observation provides evidence that the population is evolving?
A) The alleles R and R' have unequal frequency in the population.
B) The population is decreasing, and the allele frequencies remain the same.
C) The allele R' is becoming more common in the population.
D) The population is increasing, and the allele frequencies remain the same.
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Answer:
C) The allele R' is becoming more common in the population.
The observation from this experiment provides the evidence that the population is evolving and the allele R' is becoming more common in the population. Thus, the correct option is C.
What is Incomplete dominance?Incomplete dominance is the form of gene interaction which results from a cross in which each of the parental contribution is genetically unique and the allele gives rise to progeny whose phenotype is intermediate of the two parental genotypes and phenotypes. Incomplete dominance is also referred to as semi-dominance or partial dominance. It is an exception of the Mendel's law of dominance.
From the observation made in the experiment, it can be said that the allele R' which is responsible for white colored flowers in the plant are becoming more common in the population.
Therefore, the correct option is C.
Learn more about Incomplete dominance here:
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How do viruses recombine different DNA?
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Answer:
The genetic interaction of DNA viruses can result in break-rejoin recombination, in which the two DNA molecules of different viruses break and then cross over. Break-rejoin recombination results in novel progeny viruses with some DNA sequences of both types of parental viruses.
Explanation:
Answer:
the two DNA molecules of different viruses break and then cross over.
Explanation:
Break-rejoin recombination results in novel progeny viruses with some DNA sequences of both types of parental viruses.
Compare a lunar eclipse and a solar eclipse. For each type of eclipse, be sure to provide evidence that describes:
The alignment of the sun, moon and earth during the eclipse.
The phase of the moon that is observable during the eclipse.
How the sun’s light is being blocked on the earth and the moon.
Type your answer on a Google doc and submit
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Answer:
A lunar eclipse occurs when the Earth gets in the way of the sun and blocks sunlight from hitting the moon. This makes the moon have a reddish-orange tint to it. A full moon is visible during a lunar eclipse.
A solar eclipse happens when the moon gets in between the sun and the Earth, forming a crown like ring around the moon, which is from the sun. The moon itself might not be visible, due to the angle at which it sun is hitting it at.
What are the 2 major categories of angiosperms?
Answers
Answer:
Monocotyledons (monocots) and dicotyledons (dicots)
Explanation:
Answer:
Monocotyledons (monocots) and dicotyledons (dicots).
Explanation:
I don't know if this actually needs an explanation :)
Some individuals who are infected with malaria develop anemia, which is a deficiency of red blood cells.
a) How could anemia benefit these individuals? b) If they have children will the children be anemic?
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Answer:
...
Explanation:
Anemia can be benefitial in some cases, because it can help keep you safe from other harmful diseases like tubercuosis. No, it cannot be passed down.
