Arroyo Mendelian & Non-Mendelian Test Review

Front

What is the representation of dominant alleles in genetics?

Back

Dominant alleles are represented by an upper case letter.

Front

What does the term 'Genotype' refer to in genetics?

Back

Genotype refers to the possible combination of alleles in a gene, such as an individual's blood type.

Front

If two brown-eyed parents (Bb) have a baby, what is the probability that the baby will have blue eyes?

Back

The chance that the baby is blue-eyed is 25%.

Front

What type of inheritance is represented by the coexistence of both alleles in the phenotype?

Back

This type of inheritance is known as codominance.

Front

What is a genotype that consists of one dominant and one recessive allele called?

Back

This genotype is referred to as heterozygous.

Front

What is the difference between a dominant allele and a recessive allele?

Back

A dominant allele expresses its trait even when only one copy is present, while a recessive allele only expresses its trait when two copies are present.

Front

What is the expected phenotypic ratio in a monohybrid cross between two heterozygous parents (Bb x Bb)?

Back

The expected phenotypic ratio is 3:1, with three showing the dominant trait and one showing the recessive trait.

Front

Define homozygous genotype.

Back

A homozygous genotype consists of two identical alleles for a particular gene, either both dominant (AA) or both recessive (aa).

Front

What is the significance of a Punnett square in genetics?

Back

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

Front

What does it mean for an organism to be heterozygous for a trait?

Back

An organism is heterozygous for a trait if it has two different alleles for that trait, such as Bb.