Genetics

Front

What is a homozygous recessive allele?

Back

A homozygous recessive allele consists of two identical recessive alleles (e.g., 'tt'). It expresses the recessive trait in the phenotype.

Front

Who is known as the 'father of genetics'?

Back

Gregor Mendel is known as the 'father of genetics' for his foundational work in the study of heredity.

Front

What is a homozygous dominant allele?

Back

A homozygous dominant allele consists of two identical dominant alleles (e.g., 'YY'). It expresses the dominant trait in the phenotype.

Front

In a heterozygous genotype, which allele is expressed in the phenotype?

Back

The dominant allele is expressed in the phenotype.

Front

What is the phenotype for a genotype Tt?

Back

The phenotype for Tt is tall, as the dominant allele (T) is expressed.

Front

Define genotype.

Back

Genotype refers to the genetic makeup of an organism, specifically the alleles it possesses.

Front

Define phenotype.

Back

Phenotype refers to the observable characteristics or traits of an organism, influenced by its genotype and environment.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their traits even when only one copy is present, while recessive alleles require two copies to express their traits.

Front

What does it mean for an organism to be heterozygous?

Back

An organism is heterozygous when it has two different alleles for a particular gene (e.g., 'Tt').

Front

What is the purpose of a Punnett square?

Back

A Punnett square is used to predict the genetic outcomes of a cross between two organisms.