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Allele N (long nose) exhibits incomplete dominance over the recessive allele n (short nose). A heterozygote for the nose gene will have:

A. a long nose.
B. a short nose.
C. a nose of intermediate length.
D. a long nose only when he lies.

Answer :

A heterozygote for the nose gene will have a nose of intermediate length.

In incomplete dominance, the heterozygous individual displays a phenotype that is a blend or intermediate between the two homozygous phenotypes. In this case, the heterozygote with one copy of the N allele and one copy of the n allele will exhibit a nose length that is neither fully long nor short, but falls somewhere in between.

In the case of the nose gene with allele N (long nose) and allele n (short nose), incomplete dominance means that the heterozygote, having one copy of each allele (Nn), will exhibit a nose length that is not fully long or short, but rather falls somewhere in between. This is because neither allele is completely dominant over the other. The statement about having a long nose only when lying is not accurate and does not relate to the principles of incomplete dominance.

To learn more about incomplete dominance, here

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