Genetics Practice (Mendelian & Non-mendelian)

Front

How many alleles do you inherit from EACH parent for a specific trait?

Back

1

Front

Which of the following statements is true regarding blood types? A and O are codominant, B is recessive. B and O are codominant, A is recessive. A and B are codominant, O is recessive. A, B and O are all codominant with each other.

Back

A and B are codominant, O is recessive.

Front

The genetic makeup (alleles) for a trait is called the ...

Back

genotype

Front

Genotype: TT

Back

homozygous dominant

Front

In horses, coat color can be brown, white or brown with white spots. What would be the expected genotypes and phenotypes if a white horse mated with a brown with white spots horse? What type of inheritance pattern is this?

Back

codominance; 0BB: 2BW: 2WW

Front

What is the definition of phenotype?

Back

The observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.

Front

What is the difference between homozygous and heterozygous genotypes?

Back

Homozygous genotypes have two identical alleles for a trait, while heterozygous genotypes have two different alleles.

Front

What is codominance in genetics?

Back

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 incomplete dominance?

Back

A genetic situation in which one allele does not completely dominate another allele, resulting in a new phenotype that is a blend of the two.

Front

What does it mean if an allele is recessive?

Back

An allele that is masked by the presence of a dominant allele and only expressed in a homozygous condition.