Question

1. a (i) ________ allele can mask the effect of a recessive one in heterozygous individuals. the phenotype determined by a recessive allele appears only when the individual is (ii) ______ for that allele. understanding these allele relationships helps explain why certain traits (iii) ________ in a family pedigree. blank (i) blank (ii) blank (iii) a. codominant d. haploid g. skip generations b. dominant e. heterozygous h. blend evenly c. partially dominant f. homozygous i. show incomplete dominance

Explanation:

• Blank (i): A dominant allele masks a recessive allele in heterozygous individuals. Codominant alleles show both traits (e.g., roan cattle), and partially dominant (incomplete dominance) shows an intermediate trait (e.g., pink - flowered snapdragons).
• Blank (ii): Recessive phenotypes appear when an individual is homozygous (has two identical recessive alleles). Heterozygous has one dominant and one recessive allele (shows dominant trait), and haploid refers to having one set of chromosomes (not relevant here).
• Blank (iii): Recessive traits can skip generations in a pedigree. If two heterozygous (carrier) parents have a child, there is a 25% chance of the child being homozygous recessive (showing the recessive trait). Blending evenly is not a typical Mendelian inheritance pattern for simple dominant - recessive traits, and incomplete dominance is a different inheritance pattern (not related to skipping generations in the classic sense).

Answer:

B. Dominant, F. Homozygous, G. Skip generations