5lIn humans, the ability to roll the tongue is dominant over the inability to roll the tongue. If two parents who are homozygous dominant for this trait have 8 children, how many children would be expected to be unable to roll their tongues?
(a) 0
(c) 8
(b) 2
(d) 4
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Answer:
OPTION A 0%
Explanation:
The correct option is A
0%
0% chance that the child will be able to roll his tongue. Two homozygous recessive parents can only produce children who are homozygous recessive, in this case unable to roll their tongues
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