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Katen [24]
3 years ago
8

Skin and nerve cells have different appearances and characteristics from each other, although they contain the same DNA. Why?

Biology
1 answer:
irina [24]3 years ago
3 0

Answer:

They have the same DNA because they are all part of the same organism, but they look and act different because they have different jobs and uses.

Explanation:

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Answer:

a) The genes present on separate chromosomes exhibit indepedent assortment.

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Explanation:

a) In a dihybrid cross, if the genes are present on the same chromosome, they will not exhibit independent assortment. The genes present on the same chromosome are called linked genes. Linked genes are inherited together. The absence of independent assortment of a linked gene gives more of parental types in F2 progeny. Therefore, if genes are not present on a separate chromosome, Mendel’s ratios deviate.

b) Alleles for tallness and purple flower are dominant. In the progeny, all the plants are tall. This means that the dominant tall plant is homozygous. With respect to flower color, the trait exhibits segregation of dominant and recessive alleles and both purple and white flower progeny are obtained. This makes both the plants heterozygous for the flower color gene.  

The genotype of tall and purple flower parent= TTPp

The genotype of short and purple flower parent: ttPp

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