Semester Review Pt 5

Front

What is the genotypic ratio in a monohybrid cross?

Back

The genotypic ratio is the ratio of homozygous dominant, heterozygous, and homozygous recessive offspring, typically expressed as 1:2:1.

Front

What does homozygous recessive mean?

Back

Homozygous recessive refers to an organism that has two identical recessive alleles for a trait, represented as 'bb'.

Front

What is unique about an individual's DNA?

Back

An individual's DNA is unique to them, meaning it is different from that of their siblings and parents.

Front

What are recessive genes?

Back

Recessive genes are alleles that are expressed only when two copies are present; they are often masked by dominant alleles.

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, such as blue eyes.

Front

What is a dominant gene?

Back

A dominant gene is an allele that expresses its trait even when only one copy is present.

Front

What is a monohybrid cross?

Back

A monohybrid cross is a genetic cross between parents that differ in a single trait.

Front

What is the difference between genotype and phenotype?

Back

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

Front

What does it mean for genes to be homologous?

Back

Homologous genes are genes that have the same structure and function but may have different alleles.

Front

What is the purpose of a Punnett square?

Back

A Punnett square is used to predict the genotypes and phenotypes of offspring from a genetic cross.