A father and mother both have free earlobes. The mother has a homozygous genotype, and the father has a heterozygous genotype. Is it possible for these parents to have offspring with attached earlobes

Question

darksonic112233 · Answer

It would not be possible for the offspring to have attached earlobes. Here's why:

Since the father is heterozygous (he has one recessive trait, and one dominant) the trait
for free earlobes must be dominant, because if it wasn't he would have attached earlobes.

Using a pedigree chart, we can see what traits the offspring will have.

Since no outcome is two recessive traits, the offspring cannot have attached earlobes.


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zarkam21 · Answer

OKay so what about this

zarkam21 · Answer

attachment

darksonic112233 · Answer

The punnett square you filled in is half right. You are correct about the father having two recessive traits, but the mother is heterozygous meaning she has one dominant trait and one recessive trait. It you have trouble remembering the difference between heterozygous and homozygous, here's how I was taut. It's can be considered inappropriate, but whatever: The homozygous traits are homosexual. They choose a partner the same as them.

zarkam21 · Answer

If they have a child, what is the probability of their child having free earlobes

darksonic112233 · Answer

The child would have a %50 chance of having free earlobes because, after the punnett square is fixed 2 of the outcomes will result in free, while the other 2 will result in attached