Dihybrid Crosses definitions Flashcards

An organism heterozygous for two different genes, exhibiting one dominant and one recessive allele for each gene.

Having two different alleles for a specific gene, one inherited from each parent, resulting in a mixed genotype (e.g., Aa).

The genetic makeup of an organism, represented by the specific alleles inherited from both parents, determining its potential traits.

A variant form of a gene at a specific locus on a chromosome, responsible for different traits.

An allele that masks the effect of a recessive allele in a heterozygous genotype, determining the organism's phenotype.

An allele that is only expressed phenotypically when two copies are present, as it is masked by a dominant allele when heterozygous.

Having two identical alleles for a specific gene, either both dominant or both recessive.

A characteristic or feature of an organism, determined by genes, that can vary between individuals.

Observable traits of an organism, resulting from the interaction of its genotype with the environment.

A grid used to predict the genotypes of offspring from a cross between two organisms, showing all possible combinations of parental alleles.

The proportion of different observable traits in offspring from a genetic cross, typically expressed as a ratio (e.g., 9:3:3:1 in dihybrid crosses).