2024 Genetics, Meiosis, and Mutation

Front

What is a Punnett Square?

Back

A Punnett Square is a diagram used to predict the genotype and phenotype combinations of a genetic cross.

Front

What fraction of offspring will have wrinkled, yellow seeds if the answer is 3/16?

Back

This indicates that in a genetic cross, 3 out of 16 offspring are expected to exhibit the phenotype of wrinkled, yellow seeds.

Front

Define Incomplete Dominance.

Back

Incomplete dominance is a genetic situation in which one allele does not completely dominate another allele, resulting in a new phenotype.

Front

What is the genotype of a heterozygous organism?

Back

The genotype of a heterozygous organism is represented as Bb, where 'B' is the dominant allele and 'b' is the recessive allele.

Front

What are phenotype percentages?

Back

Phenotype percentages represent the proportion of different observable traits in the offspring resulting from a genetic cross.

Front

What is the phenotypic ratio for brown and white fur if the answer is 75% brown and 25% white?

Back

The phenotypic ratio indicates that for every 4 offspring, 3 are expected to have brown fur and 1 is expected to have white fur.

Front

What is a genotypic ratio?

Back

A genotypic ratio is the ratio of different genotypes that appear in offspring from a genetic cross.

Front

What is the genotypic ratio of 1 AA : 2 Aa : 1 aa?

Back

This means that for every 4 offspring, 1 is homozygous dominant (AA), 2 are heterozygous (Aa), and 1 is homozygous recessive (aa).

Front

What is the difference between phenotype and genotype?

Back

Genotype refers to the genetic makeup of an organism, while phenotype refers to the observable traits or characteristics.

Front

Define Co-Dominance.

Back

Co-Dominance is a genetic scenario where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that is neither dominant nor recessive.