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An unusual cat with curled ears was crossed
with a cat with non curled ears. All the kittens
born from that cross had non curled ears.
Later, when these offspring were crossed
each other, the phenotypic ratio was 3:1 non
curled to curled ears. What conclusion can be
made about the inheritance of curled ears?
I need the answer

Respuesta :

Histrionicus

Answer:

The correct answer is - it is a recessive trait

Explanation:

In the given question it is stated that when there is a cross between an unusual cat with curled ears and a cat with non curled ears the F1 offspring's ears are phenotypically non curled. As we know in Mendel's genetics there are two alleles for every trait similarly, here non curled ears C are dominant as in F1 generation they are expressed 100% and a cat with curled ears c is recessive as it is masked by the curled in heterozygous condition.

To prove it  these offspring were crossed  each other, the phenotypic ratio was 3:1,

     C   c

C   CC  Cc

c   Cc   cc

It is clear that curled ears is a recessive trait

     

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