Which of the statements describe mosaicism a wheelchair...

Which of the statements describe mosaicism? A wheelchair-bound person's leg muscles are weaker than her arm muscles. ☐ A tortoiseshell cat has patches of orange and black fur. A cancerous tumor develops in a woman's ovary. The skin on a person's face and arms becomes much darker than the skin on the rest of the body after a summer of working outdoors. A child with the phenotypic features characteristic of Down syndrome has a mixture of normal cells and cells with three copies of chromosome 21.

Transcript

00:01 In this video we're going to discuss three questions.

00:02 The first is that it is given here that if capital b is of brown color i dominant to the recessive b, that is a blue color i, what was the likely genotype of the gigot? so the likely it must be capital b and small b because one is from the dominant one and other one is from the recessive one.

00:23 Now the next here tells that if what might be the genotype? so if we talk about here the genotype, the genotype of this blue eye, it must be small b.

00:35 Because here, if we talk about blue eyes might be this.

00:40 But because we know that capital b is dominant over the recessive b.

00:47 Now in the last question, we have to draw three ways of genetic monezism.

01:06 So we can simply write it, make a flow chart here like we can write it to three ways and we can make these three arrows and the first way here it is replication error replication error whereas the second one is mutation by physical and we can say chemical agents and the third we can say insertion of any of the transposable element.

01:48 Transposable element now moving further now here in the replication error we can write there must be a mis incorporation of any addition or there must be any deletion also there may be any addition or any deletion of the nucleotide okay here we can say just like here it is a t g a c t and there must be change in a g g, a, c, t.

02:23 This may possible.

02:24 And in physical or chemical, we have to split in like this...

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