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yaroslaw [1]
3 years ago
6

Genetic drift is one mechanism of evolutionary change. Which of the following best describes an example of genetic drift?

Biology
1 answer:
mash [69]3 years ago
8 0

Answer:

B) Random fluctuations in the gene frequencies within a population

Explanation:

Genetic Drift Examples. Genetic drift is a change in the frequency of an allele within a population over time. This change in the frequency of the allele or gene variation must occur randomly in order for genetic drift to occur. ... Examples of genetic drift are more evident in smaller populations of organisms.

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A population of animals is at Hardy-Weinberg equilibrium. The frequency of the dominant allele Q is 0.70 and the frequency of th
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Answer:42%

Explanation:

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1 year ago
Which linkages would you expect to find at a branch point in glycogen or amylopectin?
shusha [124]

Answer:

α-1,6-glycosidic linkage.

Explanation:

The carbohydrates are the polymers made of the sugars and bonded together through the glycosisdic bonds. The monosaccharides are the simplest unit of the carbohydrates.

The glycogen and amylopectin share similar structural features. Both have α-1,4-glycosidic linkage in their linear structure. The branching has been introduced in the glycogen and amylopectin structure through the α-1,6-glycosidic linkage.

Thus, the answer is α-1,6-glycosidic linkage.

6 0
3 years ago
A recessive allele causes phenylketonuria (PKU) when homozygote. If the frequency of the recessive allele is 0.05 in the populat
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Answer:

0.095

Explanation:

Phenylkentonuria is a disease caused by a recessive allele.

The frequency of the recessive allele + the frequency of the dominant allele equals 1.

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The frequency of the dominant allele then is p = 1  - q = 0.95

If people mate randomly, the frequency of the homozygous dominant genotype will be p², the frequency of the heterozygous genotype will be 2pq and the frequency of the homozygous recessive genotype will be q² .

2pq=2× 0.05 × 0.95

2pq=0.095

The heterozygote frequency in the population is 0.095

4 0
3 years ago
What is the biggest problem with invasive species in their new location
mihalych1998 [28]

Answer:

Because they are not native to a location, they can quickly dominate the wildlife.

Explanation:

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  • They basically destroy a food chain which can have a domino affect of killing off other native species that require certain food to survive.
  • Some might spread disease.
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2 years ago
When the blood glucose level decreases during a fast or between meals, the pancreas releases glucagon. Glucagon signals the live
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Answer:

Glucagon signals the liver to start producing glucose.

Explanation:

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2 years ago
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