Question

in a group of rock pocket mice, some individuals have dark fur and others have light fur. in this group, the gene for the fur color trait has two alleles. the allele for dark fur (f) is dominant over the allele for light fur (f). dandelion, a rock pocket mouse from this group, has light fur. based on dandelions phenotype for the fur color trait, which of the following could be dandelions genotype for the fur color gene? select all that apply. ff ff ff

Explanation:

Step1: Understand dominant and recessive alleles

In genetics, a dominant allele ($F$) can mask the expression of a recessive allele ($f$). An organism shows the recessive phenotype (light - fur in this case) only when it has two recessive alleles.

Step2: Analyze each genotype

• For genotype $FF$: The dominant allele $F$ is present. The phenotype would be dark - fur (since $F$ is dominant over $f$).
• For genotype $Ff$: The dominant allele $F$ is present. The phenotype would be dark - fur (because the dominant allele masks the recessive allele).
• For genotype $ff$: There are no dominant alleles. The recessive alleles ($f$) are expressed, and the phenotype is light - fur.

Answer:

ff