Question

1. explain how incomplete dominance differs from a dominant-recessive pair of alleles. (hint: think about the phenotypes of heterozygous individuals.)
2. explain how incomplete dominance differs from co-dominance.

Explanation:

Question 10:

In dominant - recessive (e.g., Mendelian) inheritance, one allele (dominant) masks the expression of the other (recessive) in heterozygotes, so heterozygotes have the same phenotype as dominant homozygotes. In incomplete dominance, heterozygotes show a phenotype that is an intermediate (blend) between the phenotypes of the two homozygotes (e.g., red + white = pink in flower color).

In incomplete dominance, heterozygotes show a phenotype that is an intermediate (blend) of the two homozygous phenotypes (e.g., red and white alleles produce pink in flowers). In codominance, both alleles in heterozygotes are fully expressed simultaneously, and the phenotype shows both traits (e.g., AB blood type, where both A and B antigens are present).

Answer:

In dominant - recessive, dominant allele masks recessive in heterozygotes (same as dominant homozygotes). In incomplete dominance, heterozygotes have an intermediate (blended) phenotype between the two homozygotes.

Question 11: