Question

in a group of cockatiels, some individuals have bright orange cheeks and others have pale orange cheeks. in this group, the gene for the cheek color trait has two alleles. the allele r is for bright orange cheeks, and the allele r is for pale orange cheeks. hedwig, a cockatiel from this group, has pale orange cheeks. hedwig has two alleles for pale orange cheeks. based on this information, click the blue words to correct any errors in the text. hedwig is homozygous for the cheek color gene. hedwigs phenotype for the cheek color trait is bright orange cheeks. hedwigs genotype for the cheek color gene is rr.

Explanation:

1. Hedwig has two identical alleles (both for pale orange cheeks), so "homozygous" is correct, no change needed.
2. The text states Hedwig has pale orange cheeks, so the phenotype description is incorrect and needs correction.
3. Hedwig has two alleles for pale orange cheeks (coded as r), so the genotype rr is correct, no change needed.

Answer:

• Hedwig is homozygous for the cheek color gene.
• Hedwig's phenotype for the cheek color trait is pale orange cheeks.
• Hedwig's genotype for the cheek color gene is rr.