Question

A complete Punnett square here shows a cross between two mice with different fur color, agouti (A) and black (a). This Punnett square can be used to make which of the following conclusions?

Answer 1

50% of the mice will be black the other 50% will be white

Answer 2

According to the image, we can say that the trait of agouti fur is dominant over the trait of black fur, as shown in the last answer option.

What are dominant and recessive traits?

Dominant traits prevail in the offspring.

Recessive traits are only expressed when they are formed by two recessive alleles.

Dominant traits are formed by two or one dominant allele, which is represented by capital letters. Recessive traits can only be formed by two recessive alleles, since in the presence of a dominant allele, the recessive trait is not expressed.

Recessive alleles are represented by lowercase letters and as we can see in the punnet square shown above, the black-haired rat has two recessive alleles, while the agouti-haired rat has one recessive and one dominant allele, making this coat dominant in an offspring.