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Serhud [2]
3 years ago
15

PLEASE HELP!!!!

Biology
2 answers:
Brut [27]3 years ago
6 0

Answer:

The correct answer is - option 3.

Explanation:

Hemophilia is a recessive genetic sex linked disorder that is located on the X chromosome and only visible in the present in absence of normal allele of the hemophilia.

If there is normal x chromosome present in a female she will be carrier for the disease while if a male have faulty gene he will be affected. The punnete square is provide for this case.

In the given case, father has a normal X-chromosome. (XY) as he does not hemophilia and as Abigayle have only one faulty gene as she is carrier for the disorder.

A punnett square will explain all possible outcomes:

 X   YX   XX  XY   (healthy)x   Xx  xY     (carrier or has hemophilia)

Now examine the given statements:

There is a 50 percent chance that a girl will be a carrier.

   (given a girl, 25% out of 50%=50% she will be a carrier, so TRUE)

Fynjy0 [20]3 years ago
4 0
It is 3, just because he doesn’t have it, doesn’t mean he isn’t a carrier for it
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