Answer:
2
:2
Explanation:
<em>The genotypic ratio of expected of their offspring would be 2</em>
<em>:2</em>
<em>.</em>
From the illustration, the genotype of the man with male pattern baldness is
while the genotype of the woman without the baldness allele is
.
Crossing the two genotypes in marriage:
x 
Progeny:

<em>Hence, the genotypic ratio of the offspring becomes:</em>
2
:2
Answer:
At least 3 earthquake recording stations are required to find the location of the earthquake epicenter. A single recording station can only calculate distance, but not direction; to cover all possibilities, a complete circle is drawn around that station.
Explanation:
DNA samples can come from blood, skin, hair, vaginal swabs and semen. Finger and toe nails can also be used, as well as drinking glasses, clothing and urine samples.