Mendelian and Nonmendelian Genetics Test

Front

What is Mendelian genetics?

Back

Mendelian genetics is the study of how traits are inherited through the laws formulated by Gregor Mendel, focusing on dominant and recessive alleles.

Front

Define dominant allele.

Back

A dominant allele is a variant of a gene that expresses its trait even when only one copy is present in the genotype.

Front

Define recessive allele.

Back

A recessive allele is a variant of a gene that only expresses its trait when two copies are present in the genotype.

Front

What is a Punnett square?

Back

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

Front

What is the phenotypic ratio?

Back

The phenotypic ratio is the ratio of different phenotypes produced in a genetic cross.

Front

What is codominance?

Back

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

Front

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

Back

25%.

Front

What is the genotype of a person with type AB blood?

Back

The genotype of a person with type AB blood is IAIB.

Front

What is the chance of an offspring being heterozygous from a cross of a homozygous dominant and a homozygous recessive parent?

Back

100%.

Front

What is the expected phenotypic ratio from a monohybrid cross?

Back

The expected phenotypic ratio from a monohybrid cross is 3:1.