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almond37 [142]
3 years ago
11

Tay-Sachs disease is due to the absence of an enzyme that

Biology
1 answer:
Zepler [3.9K]3 years ago
5 0

Answer: <em>D. Causes an accumulation of lipids in brain cells</em>

Explanation:

Tay-Sachs disease is caused by a genetic mutation in the <em>HEXA</em> gene. It is an autosomal recessive disease that causes the mutation on an enzyme, which metabolizes <em>GM2 Ganglioside</em> in nerve cells, this leads to a build-up of the molecule in brain cells. At the moment there is no cure for the disease, only support treatment is available.

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The picture shows the dihybrid cross of 2 guinea pigs.
Pepsi [2]

Corrected Question:

The picture shows the dihybrid cross of 2 guinea pigs.

1. What is the genotype of the parents?

2. What is the phenotype of the parents?

3. What is the genotype of their baby guinea pig (in the empty box)?

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b. Bbrr - black smooth fur

c. bbRr- white rough fur

d. bbrr - white smooth fur

Answer:

Genotype of parents is BbRr as seen in the cross.

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Option D

<h3><u>Explanation:</u></h3>

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Here both the parents are heterozygous black and rough furred, with the genotype of BbRr.

So the gametes from the parents are = BR, Br, bR, and br from both the parents which are represented in the Punnet square.

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