Question

Assuming that rahul lives until adulthood

Answer 1

Sons will inherit the mutation
`(X^mY)` while daughters will be carriers
`(X^mY)` if Rahul
`(X^mY)` marries a woman with two normal X chromosomes (XX).

If Rahul carries a mutation on one of his X chromosomes
`(X^mY)` and marries a woman with two normal X chromosomes (XX), the Punnett Square illustrating the likelihood of passing on this mutation to their offspring would look like this:

|
`X^m` | X

-------|-------|-----

X |
`X^mX` | XX

Y |
`X^mY` | XY

- Sons (XY) will inherit the mutated X chromosome from Rahul since they receive his Y chromosome and will express the trait associated with that mutation.

- Daughters (XX) will inherit a normal X chromosome from the mother and have a 50% chance of inheriting the mutated X chromosome from Rahul, making them carriers of the mutation without expressing the trait (assuming the mutation is recessive or doesn't fully manifest in carriers).

Question:

Assuming that Rahul lives until adulthood, he could have children. Show a Punnett Square illustrating the likelihood of Rahul passing this mutation on if he marries a woman with two normal X chromosomes .

Answer 2

We can see here that illustrating with a Punnett Square, we have:

`X^(mut)` X (Rahul's gametes)

X |
`X^(mut)`X |
`X^(mut)`X (Woman's gametes)

X |
`X^(Y)` |
`X^(Y)` (Possible offspring)

What is Punnett Square?

A Punnett Square is a graphical tool used in genetics to predict the possible outcomes of a genetic cross between two individuals and determine the probability of certain traits or genotypes being inherited by their offspring.

In this case, all male offspring will inherit Rahul's affected X chromosome (
`X^(mut)`Y) since they receive the Y chromosome from the father and an X chromosome from the mother. Female offspring will inherit one normal X chromosome from the mother and one X^mut chromosome from the father, making them carriers (
`X^(mut)`X).

The complete question is:

Assuming that Rahul lives until adulthood, he could have children. Show a Punnett Square illustrating the likelihood of Rahul passing this mutation on if he marries a woman with two normal X chromosomes.