1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sveta_85 [38]
1 year ago
14

How long have asteroids been striking Earth?

Biology
1 answer:
faust18 [17]1 year ago
8 0
65 million years ago
You might be interested in
Red-green color blindness is an X-linked recessive disorder.
rodikova [14]
The most common type of red-green color perception defect is due to a mutation on the X-chromosome (i.e. a red-green color blind allele). X-linked red-color blindness is a recessive trait. Females heterozygous for this trait have normal vision.
You already said the answer.if you are asking for yes or no .My answer is yes for your question.
8 0
3 years ago
2. What does the atomic model teach you about the ability of scientists to
Nookie1986 [14]

Answer:

The atomic model is our understanding of how the atom is structured. At one point in history, people believed that any substance was simply made of that substance and would retain that property no matter how small a quantity it was reduced to. Later, some argued that all matter was made of tiny particles called atoms. While this is correct, later researchers found that even the atoms were made of smaller particles called electron, protons, and neutrons. More recently, scientists have discovered quarks, tiny particles that makeup protons and neutrons.

3 0
3 years ago
You are studying a population of ground squirrels. You trap 100 individuals and find 9 that have a light colored coat, and the r
Genrish500 [490]

The question is incomplete. Here is the complete question.

You are studying a population of ground squirrels. You trap 100 individuals and find 9 that have a light colored coat and the rest have a dark coat. You know that light coat color is recessive in ground squirrels. What is the allele frequency for the light coat allele  and the dark coat allele? How many of the dark coated individuals do you expect to be heterozygotes at the coat color gene? Assume the population is at H-W equilibrium.

Answer: Allele frequency for light coat: q = 0.3;

              Allele frequency for dark coat: p = 0.7;

             There will be 42 heterozygote;

Explanation: A population in H-W equilibrium is a population which doesn't change from one generation to the next if there are no disturbing factors, as migration or mutation.

It follows the equation: p^{2}+2pq+q^{2}=1.

p represents the frequency of the dominant allele;

q represents the frequency of the recessive allele;

2pq represents heterozygote individuals;

The sum of frequencies of both alleles must be 1, i.e.: p+q=1

For the population of squirrels:

  • Frequency of recessive allele

q^{2} = \frac{9}{100}

q = \sqrt{\frac{9}{100}}

q = 0.3

  • Frequency of dominant allele

p+q=1

p=1-q

p=1-0.3

p = 0.7

  • Frequency of heterozygote

2pq = 2*0.7*0.3 = 0.42

In a population of 100 individuals: 0.42*100 = 42

The allele frequency for the light coat is 0.3; for the dark coat is 0.7.

It is expected to have 42 heterozygote individuals in this population.

3 0
3 years ago
Which of the following could be considered
Lemur [1.5K]

Answer:

considered what? the question was not finished

Explanation:

5 0
3 years ago
Read 2 more answers
Complete the following statements:
Tatiana [17]

Answer:

longer is lower shortwe is higher

3 0
2 years ago
Other questions:
  • How does a perceived lack of control affect health?
    15·1 answer
  • The ability to detect motion of sounds depends on the same area of the brain that helps detect motion of objects.
    8·1 answer
  • Do the roots of a plant continue growing after their tips are removed? Explain giving reason
    15·1 answer
  • What are three negative effects of diverting or stopping the flow of river water?
    9·2 answers
  • Someone good at biology help? It's about insulin pumps ..?
    7·1 answer
  • Alexis, a middle-aged woman, is very moody and becomes irritable at the slightest provocation. Recently, her waist size has incr
    8·1 answer
  • Need an answer, please thanks
    14·1 answer
  • What are two reasons why the cells would need to divide (click all that apply).
    13·1 answer
  • What is the mechanism by which binding of testosterone to the testosterone receptor leads to upregulated gene transcription
    12·1 answer
  • How is dna like a ladder
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!