All categories

3 years ago

Explain why Huntington disease is caused by a dominant allele.

Biology

1 answer:

Ymorist [56]3 years ago

5 0

Answer:

Explanation:

The huntington disease is a disease that is caused by the dominent allele. It is the disease which causes damage to the brain cell. The mother and father can be carrier or affected by the disease. As in the condition if both parents exhibit a hetrozygous condition that is both have a dominent as well as as a recessive allele responsible for the disease. Then there is 75% chances of occurence of disease in the child. If both parents are homozygous that is both have dominent alleles then 100% chances of occurrence of the disease.

You might be interested in

Pure rain egg yolks battery acid and milk are all examples of acids

aleksandr82 [10.1K]

Answer:

TRUE

Explanation:

7 0

3 years ago

If you were spin a spinner numbered 1 - 10, what would is the probability of getting an odd number

vesna_86 [32]

50%, 1/2

hope this helps!!

4 0

3 years ago

Read 2 more answers

A plant's stem _____.

Natali5045456 [20]

Answer:

All the above

Explanation:

A stem is one of two main structural axes of a vascular plant, the other being the root. It supports leaves, flowers and fruits, transports fluids between the roots and the shoots in the xylem and phloem, stores nutrients, and produces new living tissue.

Stems have four main functions which are:[1]

Support for and the elevation of leaves, flowers and fruits. The stems keep the leaves in the light and provide a place for the plant to keep its flowers and fruits.

Transport of fluids between the roots and the shoots in the xylem and phloem(see below)

Storage of nutrients

Production of new living tissue. The normal lifespan of plant cells is one to three years. Stems have cells called meristems that annually generate new living tissue.

3 0

3 years ago

Read 2 more answers

In certain mice, long tails (T) are dominant over short tails (t). If 2 hybrid mice mate, what will the outcome be?

yuradex [85]

Answer:

3 long tails : 1 short tail

Explanation:

This question involves a single gene coding for tail length in mice. The allele for long tail (T) is dominant over the allele for short tail (t). This means that an heterozygous mice will possess the long tail length.

According to this question, in a cross between two hybrid or heterozygote mice i.e. Tt × Tt, the following gametes will be produced by each parent:

Tt - T and t

Using these gametes in a punnet square (see attached image), the following will be produced: TT, Tt, Tt and tt.

Offsprings with genotype TT, Tt and Tt will have a LONG TAIL while genotype tt will have a SHORT TAIL. Hence, the phenotypic ratio will be 3 long tails : 1 short tail.

7 0

3 years ago

In this figure, a line through points X and Y will

Naddika [18.5K]

A picture is needed to answer.

7 0

3 years ago