Traits and Punnett Squares

Front

What is a homozygous recessive genotype?

Back

A homozygous recessive genotype consists of two identical recessive alleles, such as 'tt'.

Front

What are genotypes?

Back

Genotypes are the genetic makeup of an organism, represented by the alleles it possesses, such as Aa, DD, bB, or yy.

Front

What is a phenotype?

Back

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

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic constitution of an organism, while phenotype refers to the observable 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, such as 'Aa'.

Front

What is the significance of Punnett squares in genetics?

Back

Punnett squares are used to predict the genotypes and phenotypes of offspring from a genetic cross.

Front

What does the letter 'B' represent in genetics?

Back

In genetics, 'B' typically represents a dominant allele, such as for brown eyes.

Front

What does the letter 'b' represent in genetics?

Back

In genetics, 'b' typically represents a recessive allele, such as for blue eyes.

Front

Can two siblings have the same phenotype but different genotypes?

Back

Yes, siblings can have the same phenotype (e.g., brown eyes) but different genotypes (e.g., BB and Bb).

Front

What is the genotype of an organism with red hair if red is a recessive trait?

Back

The genotype of an organism with red hair would be homozygous recessive, such as 'rr'.