Question Detail
Question
When a homozygote for one allele is crossed with a homozygote for another allele, all the progeny in the F1 generation are: A. genotype of the original parent B. homozygote with the same phenotype C. heterozygote with the same phenotype D. heterozygote with the same genotypes
Correct Answer
Option D is the correct answer.
Detailed Explanation
Crossing two homozygotes (e.g., AA x aa) results in all offspring being heterozygotes (Aa). They all have the same genotype (heterozygous) and, assuming complete dominance, they will all have the same phenotype (the dominant trait).
Hint
All offspring are hybrids, identical genetically for that trait.