Genetics TEST

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 from the parents.

Front

What does it mean for a trait to be dominant?

Back

A dominant trait is one that is expressed in the phenotype even when only one copy of the allele is present.

Front

What does it mean for a trait to be recessive?

Back

A recessive trait is one that is only expressed in the phenotype when two copies of the allele are present.

Front

What is the genotype of an organism?

Back

The genotype is the genetic makeup of an organism, representing the alleles it carries.

Front

What is the phenotype of an organism?

Back

The phenotype is the physical expression or characteristics of an organism, influenced by its genotype.

Front

What is codominance?

Back

Codominance is a genetic scenario where both alleles in a heterozygote are fully expressed, resulting in a phenotype that is neither dominant nor recessive.

Front

What is incomplete dominance?

Back

Incomplete dominance is a genetic situation where a heterozygote expresses a phenotype that is intermediate between the two homozygous phenotypes.

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous means having two identical alleles for a trait, while heterozygous means having two different alleles for a trait.

Front

What is the significance of twins being genetically identical?

Back

Identical twins share the same genetic material, which is why they resemble each other more than they resemble their siblings.

Front

What is a trait?

Back

A trait is a specific characteristic of an organism, which can be influenced by genetics and the environment.