Question

If b is a recessive gene list the offspring that will exhibit a short recessive trait

Answer 1

When a trait is recessive, an individual must have two copies of a recessive allele to express the trait. Recessive alleles are denoted by a lowercase letter (a versus A). Only individuals with an as phenotype will express a recessive trait; therefore, offspring must receive one recessive allele from each parent to exhibit a recessive trait.

Step-by-step explanation:

One example of a recessive inherited trait is a smooth chin, as opposed to a dominant cleft chin. Let (S) represent the dominant allele, and (s) represent the recessive allele. Only (SS) individuals will express a smooth chin. To determine the probability of inheritance of a smooth chin (or any other recessive trait), the phenotype of the parents must be considered. If one parent is heterogeneous (SS) and the other is homologous recessive (SS), then half of their offspring will have a smooth chin

Answer 2

Individuals with the genotype "bb" will exhibit the short recessive trait, as having two copies of the recessive gene is required for the expression of this characteristic.

If "b" represents a recessive gene for a short trait, offspring exhibiting the short trait must inherit two copies of the recessive gene. Therefore, the genotype "bb" indicates an individual with a short recessive trait.

When an organism inherits one copy of the dominant gene (represented by "B") and one copy of the recessive gene ("b"), it displays the dominant trait. Only individuals with the genotype "bb" will manifest the short recessive trait, as the presence of two recessive alleles is necessary to express the characteristic in the phenotype.