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
gregori [183]
3 years ago
14

The exquisite complexity of traits such as the vertebrate eye seems to pose a problem for evolution by natural selection. How do

evolutionary biologists think that complex eyes evolved?
Biology
1 answer:
Dafna1 [17]3 years ago
4 0

Answer:

The correct answer would be - complex eyes evolved in the gradual steps, each of which was fully functional and adaptive in improving visual acuity.

Explanation:

The natural selection of the complex traits such as the vertebrate eye (complex eye) are seems to be problematic, many biologist think that the complex eyes evolution is take place in gradual steps and each step of this evolution was adaptive and functional in improving the visual acuity.

The steps that were involved are like light sensitivity patch, a deepening hole or pit that help in sharp vision and many other random evolution steps.

Thus, the correct answer is- complex eyes evolved in the gradual steps, each step of this evolution was fully functional and adaptive that helps in improving visual acuity.

You might be interested in
Which experimental design decision would most likely produce invalid and unreliable results
zaharov [31]
Having more then one independent variable will give unreliable results. Hope this helps
3 0
3 years ago
Read 2 more answers
Memory cells may take the form of B cells. T cytotoxic cells. T helper cells. All of the choices are correct.
topjm [15]

Answer:

Having considered how an appropriate primary immune response is mounted to pathogens in both the peripheral lymphoid system and the mucosa-associated lymphoid tissues, we now turn to immunological memory, which is a feature of both compartments. Perhaps the most important consequence of an adaptive immune response is the establishment of a state of immunological memory. Immunological memory is the ability of the immune system to respond more rapidly and effectively to pathogens that have been encountered previously, and reflects the preexistence of a clonally expanded population of antigen-specific lymphocytes. Memory responses, which are called secondary, tertiary, and so on, depending on the number of exposures to antigen, also differ qualitatively from primary responses. This is particularly clear in the case of the antibody response, where the characteristics of antibodies produced in secondary and subsequent responses are distinct from those produced in the primary response to the same antigen. Memory T-cell responses have been harder to study, but can also be distinguished from the responses of naive or effector T cells. The principal focus of this section will be the altered character of memory responses, although we will also discuss emerging explanations of how immunological memory persists after exposure to antigen. A long-standing debate about whether specific memory is maintained by distinct populations of long-lived memory cells that can persist without residual antigen, or by lymphocytes that are under perpetual stimulation by residual antigen, appears to have been settled in favor of the former hypothesis.

6 0
2 years ago
How can the direction that the moon rotates and revolves be described?
Klio2033 [76]
Well everyone moon phase is a phase from where the earth is rotating so it can be determined by the earth rotating
5 0
2 years ago
Which of the following is the Hardy-Weinberg equation?
ohaa [14]
<span>A.)p2 + 2pq + q2 = 1.0</span>B.) p2 + q2 = 1.0 - Correct Answer
<span>C.)p2 + 2pq + q2 = 0</span><span>D.)p2 - 2pq + q2 = 1.0</span><span>E.)p2 - q2 = 1.0</span>
5 0
3 years ago
Read 2 more answers
What are some ides you have heard of for climate change
GenaCL600 [577]

Answer:

Ans:

Explanation:

Make your voice heard by those in power. ...

Eat less meat and dairy. ...

Cut back on flying. ...

Leave the car at home. ...

Reduce your energy use, and bills. ...

Respect and protect green spaces. ...

Invest your money responsibly. ...

Cut consumption – and waste.

hope it helps ....please mark brainliest

8 0
2 years ago
Other questions:
  • What happened at the end of the most recent ice age?
    10·2 answers
  • Describe a function of a carbohydrate
    14·1 answer
  • A class of chemical called a neurotransmitter is important in the transmission of nerve impulses. Neurotransmitters are packaged
    14·2 answers
  • Can any one organism in the food web be a consumer, an omnivore a predator and a pr Justify your answer ?
    15·1 answer
  • The adenohypophysis is the glandular front lobe of the pituitary gland. because of its position, it is also known as the _______
    13·1 answer
  • Which of the following organs is least likely to be damaged in an automobile accident? a. stomach b. intestines c. urinary d. bl
    5·1 answer
  • Proper folding of proteins is essential for their biological activity. In general, the functional conformation of a protein is t
    5·1 answer
  • What common feature is shared by the sodium and chloride ions?
    6·1 answer
  • A gene is respsonsible for producing an enzyme that is used to make tryphon an in bacteria. If the cell has enough tryptophan an
    12·1 answer
  • Is it bad to put your little brother in the dryer and say spinjitzu
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!