Genotype vs. Phenotype quiz Flashcards

Genotype is the genetic combination of alleles in an individual organism, typically represented as a pair of letters.

A homozygous genotype has two identical alleles for the same gene, either both dominant (e.g., YY) or both recessive (e.g., yy).

Heterozygous refers to having two different alleles for the same gene, such as one dominant allele and one recessive allele (e.g., Yy).

Phenotype is the physically expressed trait that results from the genotype, such as the color of a pea.

In a heterozygous genotype, the dominant allele will mask the effect of the recessive allele, determining the phenotype.

A homozygous dominant genotype (YY) results in a yellow color phenotype in pea plants.

A homozygous recessive genotype (yy) results in a green color phenotype in pea plants.

No, both homozygous dominant (YY) and heterozygous (Yy) pea plants have yellow-colored peas, making them visually indistinguishable.

A Punnett square is used to predict the possible genotypes and phenotypes of offspring for a specific trait.

A Punnett square represents both meiosis (gamete formation) and fertilization (gamete fusion).

The dominant allele in a heterozygous genotype exerts its effect over the recessive allele, determining the phenotype.

The genetic notation for a homozygous recessive genotype is two lowercase letters, such as yy.

The genetic notation for a heterozygous genotype is one uppercase letter and one lowercase letter, such as Yy.

An allele is a variant form of a gene that can exist in different versions, such as dominant or recessive.

The genotype, which is the genetic combination of alleles, determines the phenotype, which is the physical expression of those genes.