Homozygous & Heterozygous

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene, such as TT or tt.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene, such as Tt.

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by the alleles it possesses.

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.

Front

What is a Punnett square?

Back

A Punnett square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles.

Front

What is the probability of getting a homozygous recessive offspring from a cross of two heterozygous parents?

Back

The probability is 25%.

Front

If 'G' represents green skin and 'g' represents brown skin, what is the genotype of a frog with brown skin?

Back

The genotype must be gg.

Front

What is the study of heredity and the variation of inherited characteristics called?

Back

Genetics.

Front

What is the expected phenotype ratio in a monohybrid cross?

Back

The expected phenotype ratio is 3:1 for dominant to recessive traits.

Front

What does it mean if an organism is homozygous dominant?

Back

It means the organism has two dominant alleles for a trait, such as TT.