Mendelian Genetics and Punnett Squares Quiz

Traits that are clearly defined and controlled by a single gene.

Three individuals displaying one phenotype to one individual displaying the other.

An allele whose expression is masked by a dominant allele when heterozygous.

When the phenotype of the heterozygous genotype is distinct from and often intermediate to the phenotypes of the homozygous genotypes.

An allele that is always expressed, even if only one copy is present.

This represents a homozygous genotype for the B blood type, which is a possible blood type in the ABO blood group system.

Having two identical alleles for a particular gene.

One out of four possible outcomes.

Having one X and one Y chromosome.

One out of two possibilities as the son can inherit either the X chromosome with the trait or the Y chromosome without it.

The combination of alleles that an individual carries for a particular gene.

Three individuals displaying one phenotype to one individual displaying the other.

Nine displaying both dominant traits, three displaying one dominant and one recessive, three displaying the other dominant and one recessive, one displaying both recessive traits.

During gamete formation, the alleles of each gene segregate from each other, so that each gamete carries only one allele for each gene.

When one gene influences multiple, seemingly unrelated phenotypic traits.

Equal probability of four different phenotypes.

When the effect of one gene is dependent on the presence of one or more 'modifier genes'.