All categories

3 years ago

How could genetic drift explain differences in the genotype frequencies among the caucasian and aborigine populations?

1 answer:

7 0

Genetic drift occurs when there is no random mating across a population. This causes a change in allelic frequency due to a random sampling of the population.

As the aboriginal population explored the earth, a small part of the population became geographically isolated either due to continental drift and climate changes. As the isolated population grew bigger, they established their own gene pool. This resulted a change in genotypic frequencies from that of the aboriginal population.

You might be interested in

A woman with type A blood (whose father was type O) has children with a man that has type O blood. Both individuals are heterozy

Fantom [35]

Answer:

Explanation:

A woman with type A blood (whose father was type O) meaning her genotype is AO mates with

Man that has type O blood (OO genotype)

Both are heterozygous for MN blood group and both also heterozygous for the FUT1 gene controlling the synthesis of the H substance (Hh)- which determines the expression of the A and B antigen.

Cross

A O M N H h

O AO OO M MM MN H HH Hh

O AO OO N MN NN h Hh hh

Type A- 1/2 O-1/2 type M- 1/4 MN-1/2 N- 1/4, type H- 3/4 h-1/4

Type A with M antigen:

1/2*1/4*3/4 = 3/32

Type A with M and N antigens:

1/2*1/2*3/4 = 3/16

Type A with N antigen:

1/2*1/4*3/4 = 3/32

Type O with M antigen:

1/2*1/4*3/4= 3/32

Type O with M and N antigens:

1/2*1/2*3/4 = 3/16

Type O with N antigen:

1/2*1/4*3/4 = 3/32.

The 3/4 value comes from the expression of Hh-3/4 (this determines if the A and B Angie will be expressed).

8 0

3 years ago

(MARINE SCIENCE) Corals in tropical reefs have been shown to contain chemicals that are promising as treatments for

valina [46]

Answer:

Many organisms found on reefs produce chemical compounds that have been used in treatments for cardiovascular diseases, ulcers, leukemia, lymphoma, and skin cancer, and many more remain undiscovered.

Explanation:

hope this helps... but maybe not so sorry if im wrong :(

4 0

2 years ago

What is the purpose of proteins

Sliva [168]

They basically do most of the work in the cells and are required for the structure, function, and regulation of the body's tissues and organs. (made up of thousands of smaller units called amino acids)

4 0

3 years ago

Breeding livestock is graded "superior," "average," and "inferior" on the same traits as slaughter animals. In a 50-word paragra

BaLLatris [955]

Livestock producers and breeders rank livestock on their ability to produce high quality, efficient breeding animals and market-worthy offspring.

To be able to effectively evaluate breeding and market animals is of vital economic importance for the animal markets. The same traits used to evaluate high-grade slaughter animals are also important in the grading of breeding stock.

When we judge livestock we classify them as:

Superior livestock
Average livestock
Inferior livestock

We are looking for the most desirable traits to fit our particular market and genetic needs. The "Livestock Judging Manual" indicates that some of the most prevalent traits necessary to score a better rating are:

Live weight
Fat depth
Muscling

and many more. The most important of which is muscling given that an animal with more muscle will produce more desirable meat for the average consumer, and therefore can be sold at higher prices.

To learn more visit:

brainly.com/question/17128434?referrer=searchResults

8 0

3 years ago

Which of the following is true about the Calvin cycle?

kakasveta [241]

Answer:

The following??

Explanation:

7 0

3 years ago