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
Stolb23 [73]
3 years ago
14

Why would natural selection not occur without genetic variations in species

Biology
2 answers:
Fudgin [204]3 years ago
7 0
Natural selection only occurs when there is a superiority within a species set. If there is no genetic variation, no single animal is any better than the next, making the presence of superiority impossible and survival left up to chance. In this case it would be considered genetic continuity. 
nevsk [136]3 years ago
3 0
Natural selection cannot occur without genetic variation because without genetic variation all the species would be the same and as such there would be no fitter species thus nature cant select one for survival.
You might be interested in
Could chromosomes 2 be homologous with chromosomes 1
SashulF [63]

Answer:

Homologous chromosomes are two pieces of DNA within a diploid organism which carry the same genes,

7 0
3 years ago
What happens to the carbon dioxide produced by cellular respiration? A. It is reused by the body as glucose. B. It is excreted f
AfilCa [17]
B it breath out i hope it helps                 
3 0
3 years ago
How would the contractile vacuole of a freshwater amoeba respond is the organism was placed in seawater
morpeh [17]

The major function of the contractile vacuole of amoeba is osmoregulation. The solute concentration found in the cell of amoeba's cytoplasm is more than the solute concentration in the freshwater that surround the external part of the organism, thus, water enter the cell through osmosis. The contractile vacuole collect the excess water and expel it through an opening in the cell membrane. By doing this, the contractile vacuole maintains the water balance in amoeba. This how the contractile vacuole normally operate.

In a situation where amoeba is placed in seawater, then water from the cell cytoplasm will rush out of amoeba cell, because of the higher salt content of the surrounding medium. The contractile vacuole will respond to the situation by increasing its contraction and pumping water out the cell in an accelerated manner, this will lead to the shrinking of the cell.

3 0
3 years ago
Which of these provides evidence of the common ancestry of all life?
schepotkina [342]

Answer:d

Explanation:

5 0
3 years ago
A scientist at the polar ice cap was studying an ice sample from hundreds of meters below the surface. While examining the ice,
emmainna [20.7K]

Answer:

<em>The correct option is C) Plants</em>

Explanation:

Option A is false because the cell cannot be an animal cell. This is because an animal cell does not possess a cell wall.

Option B is false because the cell cannot be a bacterial cell. This is because a bacterial cell does not have a nucleus. Their genetic material is dispersed inside the cytoplasm.

Option C is correct because all the organelles, a cytoskeleton, mitochondrion, nucleus, cell wall, and ribosomes, are present inside the plant cells.

6 0
3 years ago
Other questions:
  • Describe, in detail, to a freshman undergraduate student the basic principle underlying the separation of dna using agarose gel
    8·2 answers
  • All of the cells in the human body contain the same genes. How do cells have different morphologies and functions when they cont
    9·1 answer
  • What is the Earth's core made of
    8·2 answers
  • _____ is an inquiry process that begins with a theory, prediction, or general principle that is then tested through data collect
    7·1 answer
  • I just need to know whether this is a conductor or insulator flannel shirt, iron skillet,copper pipe,oven mitt
    15·1 answer
  • Explain the method scientists use to study how Eath's atmosphere and climate have changed during the past million
    7·1 answer
  • Sand is used to make glass. what do you think must be done to the sand to make it transform into glass?
    7·2 answers
  • How do the kidneys maintain homeostasis in the body?
    5·2 answers
  • According to newtons laws of motion, what causes an object to change its state of motion
    11·1 answer
  • Commercial crabbero catch so many blue crabs that the blue crab population decreases.Which two populations are also likely to de
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!