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3 years ago

What part of the nervous system do the nerves in your skin belong to?

1 answer:

5 0

There are two sets of nerves in your skin. The first type are somatosensory neurons that send sensory information to your central nervous syste. The second set consists of autonomic fibers that control smooth muscle in the skin and the blood vessels in the skin.

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-Huntington's

Juliette [100K]

A pedigree is the representation of family history. 1) I.1, II.2, II.3, II.7, III.3 / 2) Dominant / 3) Six / 4) 2 girls, 1 affected / 5) niece-uncle and grandma-grandson

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Huntington's disease is an autosomal dominant affection.

It is expressed by heterozygous individuals, meaning that only one copy of the altered gene is enough to express the phenotype.

The mutated gene is the dominant one.

I will answer these questions according to the attached pedigree.

A pedigree is the representation of family history through which it is possible to follow the inheritance pattern of certain traits.

To correctly interpret a pedigree, we need to consider that,

Squares represent males or men,
Circles represent females or women.

Solid figures represent affected individuals,
Empty figures represent normal individuals.

Roman numbers indicate generations.

Individuals can be identified using numbers, genotypes, names, or others.

1. Which members of the family above are afflicted with Huntington's Disease?

I.1 ⇒ Man of the first generation

II.2, II.3, II.7 ⇒ Two women and one man of the second generation

III.3 ⇒ One woman of the third generation.

2. There are no carriers for Huntington's Disease- you either have it or you don't. With this in mind, is Huntington's disease caused by a dominant or recessive trait?

Huntington's disease is caused by a dominant allele. So a single altered gene is enough to express the affection.

3. How many children did individuals l-1 and 1-2 have?

They had six children.

Two affected girls ⇒ solid circles ⇒ Individuals II.2 and II.7

One normal girl ⇒ empty circle ⇒ individual II.6

Two normal boys ⇒ empty squares ⇒ Individuals II.4 and II.8

One affected boy ⇒ solid square ⇒ Individual II.3

4. How many girls did Il-1 and Il-2 have? How many have Huntington's Disease?

They had two girls

One affected girl ⇒ Solid circle ⇒ III.3

One normal girl ⇒ Empty circle ⇒ III.2

5. How are individuals III-2 and II-4 related? I-2 and III-5?

III-2 and II-4 ⇒ II.4 man is the uncle of III.2 girl ⇒ uncle-niece

I-2 and III-5 ⇒ I.2 woman is the grandmother of III.5 boy ⇒

grandmother-grandson

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You can learn more about pedigrees at

brainly.com/question/2952835?referrer=searchResults

brainly.com/question/16082084?referrer=searchResults

brainly.com/question/19516649?referrer=searchResults

brainly.com/question/11433494?referrer=searchResults

7 0

3 years ago

Which component is released from the active site of an enzyme during a chemical reaction?

Virty [35]

Products are released from the active site of an enzyme during a chemical reaction. Active sites directly bind to the substrates and carry out the reaction. It is this site, where product if formed, and after completion of the reaction, are released. It possesses catalytic group for making and breaking the bonds, for carrying out the reaction.

7 0

3 years ago

A male carrier of a recessive somatic mutation marries a female without this mutation. What is the probability that their child

Umnica [9.8K]

The correct answer is C. 50 %

A male is a carrier of a recessive somatic mutation it means the mutation can be expressed under homozygous condition, when both the alleles with somatic mutation. Thus, in case of a male carrier of a recessive somatic mutation marries to a normal female will produce 50 % their offspring with recessive somatic mutation so, they will be carrier and 50 % offspring are without this mutation.

6 0

3 years ago

Why accleration is a derived quantity

Ne4ueva [31]

Answer:

Explanation:

velocity are derived quantities and are both combinations of length and time. An object's acceleration is its rate of change of velocity. Acceleration is a … ... derived quantity.

7 0

3 years ago

This fly has 14 chromosomes in its cells.7 maternal chromosomes and 7 paternal chromosomes.Assume you are a microscopist viewing

katrin [286]

Answer:

23 pairs in meiosis 1 and 23 numbers in meiosis 2.

Explanation:

There are diploid number of chromosomes means double number of chromosomes at the end of meiosis 1 while on the other hand, at the end of meiosis 2, there are haploid number of chromosome means half number of chromosomes in each daughter cell. In humans meiosis 1, there are 23 pairs of chromosomes that is diploid in nature but in the end of meiosis 2, there are only 23 chromosomes in each daughter cell which is haploid in nature.

5 0

3 years ago