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In Mendaliens, black fur (B) is dominant over gray fur (b), and red eyes (R) are...

In Mendaliens, black fur (B) is dominant over gray fur (b), and red eyes (R) are dominant over purple eyes (r). The two characters show independent assortment. Determine the genotypes for the two parents that produced the following offspring:

a) 100 black fur, red eyes: 100 black fur, purple eyes, 100 gray fur, red eyes: 100 gray fur, purple eyes

b) 300 black fur, purple eyes: 100 gray fur, purple eyes

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Answer #1

Answer.

a).

100 black fur, red eyes: 100 black fur, purple eyes: 100 gray fur, red eyes: 100 gray fur, purple eyes= 1:1:1:1

BbRr(black fur, red eye) x bbrr(gray fur, purple eyes)-------parents

br
BR BbRr ( black fur, red eyes)
Br Bbrr ( black fur, purple eyes)
bR bbRr ( gray fur, red eyes)
br bbrr ( gray fur, purple eyes)

b).

Bbrr ( black fur, purple eyes) x bbrr (gray fur, purple eyes)-------parents

br
Br Bbrr ( black fur, purple eyes)
br bbrr ( gray fur, purple eyes)
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