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The ability to roll the tongue is determined by a dominant gene (T) and a recessive gene (t). A man who can roll his tongue would have the genotype Tt or TT, with the phenotype of being able to roll his tongue.

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1y ago

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What is the phenotype of a man who has 2 parents with free hanging earlobes if one parent is homozygous and the other parent is heteroygous... what are his possible genotypes?

The man could have either free hanging or attached earlobes. His possible genotypes could be either homozygous for free hanging earlobes (LL) or heterozygous for free hanging and attached earlobes (Ll).


When a tongue rolling man has a baby to a non tongue rolling women all the babies are tongue rollers explain why this occurs?

Tongue rolling is homozygous dominant and all issue from this pairing will be tongue rollers. This is the only result that is allowable with a standard Punnett square or branch diagram representation. T = tongue roller t = non-tongue roller TT X tt = 4 Tt ======With tongue rolling expressed.


A man who has dystonia marries a woman who doesn't one of their children has the condition what are the possible genotypes of the man and woman?

Assuming the dystonia is hereditary and is a recessive gene which will be called "d" for simplicity, that means the man must be "dd" and the woman is "Dd". This is the only way they could have a child who is "dd" like the father, but not the mother.


Type B blood marries a woman with type A they have six AB children what are there genotypes?

The woman could be AA or AO and the man could be BB or BO. The children would all be AB.


Which part of vagina should be licked for feeling excited?

The truth is licking the clitoris with man's moist tongue can cause tingling sensation for woman. After which, sucking the entire opening with man's lips for added satisfaction.