Question

the punnett square illustrates a cross for color of the flower. based on the phenotypes and genotypes of these offspring, it is clear that purple flower - color allele is dominant, polygenic, recessive and the parents are heterozygous, homozygous. select the correct answer from each drop - down menu. reset next

Explanation:

In the Punnett - square, offspring with genotypes Bb (heterozygous) and BB (homozygous dominant) show the purple - flower phenotype, while bb shows the non - purple phenotype. A dominant allele is one that is expressed in the phenotype even when present in a heterozygous state. Since the purple flower color is expressed in Bb individuals, the purple flower color allele is dominant. Also, since there are only two alleles (B and b) involved in determining flower color and not multiple genes (which would be polygenic), and the parents are producing offspring with different genotypes, they must be heterozygous (Bb).

Answer:

dominant; heterozygous