The term is called azoospermia. This condition
can be treated depeding on its origin. It is commonly caused by infections in
the male reproductive regions or sexually-transmitted diseases. If azoospermia
is caused by genetics, only few to zero treatments are available.
Answer:
50% wild type and 50% black i.e. 1:1 phenotypic ratio
Explanation:
Given, b+ = wild type allele
b = recessive allele
b+b+ = dominant wild type
b+b = heterozygous wild type
bb = recessive black
First cross: female b+b (wild type) X male bb (black) = bb, bb, b+b, b+b
Since bb and b+b are in 1:1 phenotypic ratio, 52 black and 58 wild type progeny are produced.
From this progeny second cross occurs between:
female bb (black) X male (wild type) b+b = bb, bb, b+b, b+b
Again the same 1:1 phenotypic ratio is obtained. Half of the progeny will be be black (bb), other half will be wild type (b+b).
Answer:
No
Explanation:
Red blood cells don’t reproduce. They only survive for 120 days in our blood before they are broken down into parts that are then recycled by a special type of white blood cell.
