Question

in a group of chickens, some individuals have white legs and others have yellow legs. in this group, the gene for the leg color trait has two alleles. the allele for white legs (l) is dominant over the allele for yellow legs (l). gizmo, a chicken from this group, has white legs. based on gizmos phenotype for the leg color trait, which of the following could be gizmos genotype for the leg color gene? select all that apply. ll li ll

Explanation:

Step1: Recall Dominant/Recessive Rules

In genetics, a dominant allele (L) masks the recessive allele (l). So, white legs (dominant) can result from LL (homozygous dominant) or Ll (heterozygous), since L is dominant. Yellow legs (recessive) only occur with ll (homozygous recessive).

Step2: Analyze Gizmo's Genotype

Gizmo has white legs (dominant phenotype). So, his genotype must have at least one L. Thus, LL (homozygous dominant) and Ll (heterozygous) are possible. The ll genotype would produce yellow legs, so it's not possible for Gizmo (who has white legs).

Answer:

The correct genotypes for Gizmo (with white legs) are LL and Ll. So, the applicable options are:

• LL
• Ll