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
dusya [7]
3 years ago
11

How does crossing over ensure that organisms living in isolated populations will have genetic variation?

Biology
2 answers:
san4es73 [151]3 years ago
7 0
For example, a population with many different alleles at a single chromosome locus has a high amount of genetic variation. ... crossing over (or recombination) between chromatids of homologous chromosomes during meiosis.
vova2212 [387]3 years ago
5 0

Answer:

Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

Explanation:

You might be interested in
Phytoplankton are so tiny you need a microscope to see them. How do they affect the global carbon cycle?
Ksju [112]

Answer:

Phytoplanktons are microscopic creatures that are primary producers of oceans. Phytoplanktons take carbon dioxide from atmosphere to make their food and then they are eaten by some other animals of oceans.

Phytoplanktons are present in huge numbers in oceans and have a great contribution to the carbon cycle because it is responsible for the transfer of carbon dioxide from the atmosphere to the oceans.  

Most of the carbon is released through combustion by animals that eat phytoplanktons but some accumulate in the ocean floor because some dead phytoplanktons settles down in the ocean.

6 0
3 years ago
We're do volcanoes usually form please help me
Inga [223]

Answer: hot spots, divergent plate boundaries, and convergent plate boundaries.

Explanation:

8 0
3 years ago
4. Suppose that a dominant allele (P) codes for a polka-dot tail and a recessive allele (p) codes for a solid colored tail. If t
lisov135 [29]

Answer:

The correct answer would be:

  • Genotype ratio: 1 (PP) : 2 (Pp) : 1 (pp)
  • Phenotypic ratio: 3 (polka-dot tails) : solid colored tail

The genotype of both parents is Pp (heterozygous).

Thus, both the parent would produce two types of gametes which are P and p.

The cross would result in the production of offspring with three types of genotype PP, Pp, and pp in 1:2:1.

Offspring with PP and Pp will have a polka-dotted tail as it is the dominant trait.

Thus, the phenotype ratio would be 3 (polka-dotted tail) : 1 (solid colored tail).

3 0
3 years ago
What gender is this duck?
Dominik [7]

Answer:

Female

Explanation:

Females typically don't have the curly tail at the end and this photo shows there are not any so I'm pretty sure it's a female.

7 0
3 years ago
Which species is threatening the natural wildlife on the galapagos islands?
g100num [7]
Galapagos islands are groups of island in the pacific ocean that are known to have a wide range of  native animals such as giant tortoise that found no where else on earth. These native animals helped Darwin in the development of the theory of natural significance which attributes to the biological significance of the Galapagos islands. Human species is a threat to the natural wildlife on these islands mainly due to poaching and destruction of natural forests that destroys habitat and also impacts negatively on biological diversity of living organisms.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Will hospital give pain meds for tooth extraction
    6·1 answer
  • Which is the highest level of biodiversity?
    12·1 answer
  • In a sample population of people, 36% have the recessive trait of "free" earlobes (q2). What is the frequency of the dominant al
    15·1 answer
  • What is the function of tomato in the preparation of swiss steak?
    9·1 answer
  • 10 points! When looking out of my back door, I see robins, blue jays, finches, crows, hawks and owls all living in the same area
    14·1 answer
  • Sve oqi71383486
    6·1 answer
  • State two examples of situations where active transport occurs
    12·1 answer
  • Which of the following are chemical reactions? Check all that apply
    6·2 answers
  • SOMEONE ANSWER QUICKLY PLEASE!
    11·1 answer
  • Explain the mechanism maintaining osmotic gradient in renal medullary intestitium​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!