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ryzh [129]
3 years ago
12

Attached earlobes are recessive to free earlobes. If two heterozygous individuals have a child, what is the probability of the c

hild having attached earlobes?
Biology
1 answer:
Sunny_sXe [5.5K]3 years ago
4 0

Answer:

probability of the child having attached earlobes since it is recessive i.e (yy)

=1/4

=0.25 × 100%

=25%

Explanation:

If two heterozygous individuals have a child

i.e let the heterozygous individuals be  = Xy

if both traits crosses together; their F₁ offspring will be;  (XX, Xy, Xy, yy)

Xy  ×   Xy

          X             y

X        XX          Xy

y       Xy            yy

probability of the child having attached earlobes since it is recessive i.e (yy)

=1/4

=0.25 × 100%

=25%

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