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3 years ago

In fruit flies, the allele for red eyes, R, is dominant. Which genotype represents a white-eyed male fruit fly?

2 answers:

6 0

It would be "rr". This is due to the fact that recessive genes, like white-eyed, have to have a genotype with both recessive to show up.

aev [14]3 years ago

5 0

The following choices are given;

A. XrXr. B. XrY. C. XRY D. XRXr

The answer is B. This is because the presence of the Y chromosome determines gender- which is male. In addition, it carries few genes than the X sex chromosome. Therefore, in this case, the X chromosome brings in the receive allele for eye color while the Y chromosome has no corresponding allele.

In most diploid organisms, they are two types of alleles for most genes which each on each set of chromosomes and at the same loci. In most cases, one allele is dominant over the other meaning that its presence masks the effect of the recessive allele. In the absence of the dominant allele, the recessive allele is expressed . Usually, the recessive gene is disadvantageous to the individual.

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predict if the sensory nerves in a persons foot are nonfunctional, would the person feel pain if the foot was severely burned

irina1246 [14]

Nerves are cells that can detect any type of pressure, movement, or anything of that nature. If we didn't have nerves, we couldn't feel pain. If the nerves in a foot are damaged, you wouldn't feel the pain of it being burned.

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4 years ago

A study was conducted in a nursing home to examine the association of hand-washing and Gastroenteritis. Residents with the disea

cupoosta [38]

Answer:

The correct answer is case control study.

Explanation:

A study in which a comparison is made between the patients carrying the disease with the patients not carrying the disease is known as the case-control study. In the mentioned study, the one carrying the disease is termed as cases, and the one that does not possess the disease is termed as controls.

This form of study is generally done to predict the association between the disease and the risk factor. In case-control studies, only observation is done as no attempt is made to change the course of the condition. The prime objective of the study is to predict the exposure of the risk elements for the individuals present in two groups, that is, controls and cases. This form of study is also called case-referent studies or retrospective studies.

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4 years ago

Which physician specializes in treatment of the gums?

natima [27]

A physician who specializes in treatment of the gums is called a periodontist.

7 0

3 years ago

Read 2 more answers

Compare the transformation of a bacterium cell with the transformation of a plant cell.

Rudiy27

Answer:

Compare the transformation of a bacterium cell with the transformation of a plant cell.

Explanation:

6 0

3 years ago

AlladinOne [14]

Answer:

Genetic Mutation

Explanation:

Speciation can be driven by evolution, which is a process that results in the accumulation of many small genetic changes called mutations in a population over a long period of time.

There are a number of different mechanisms that may drive speciation.

Two of them to point out here.

1. natural selection

2. genetic drift

genetic drift describes random fluctuations in allele frequencies in populations, which can eventually cause a population of organisms to be genetically distinct from its original population and result in the formation of a new species.

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3 years ago