Linkage and recombination

These flashcards cover key terms and concepts related to linkage and recombination in genetics.

Linkage

The tendency of genes located close together on a chromosome to be inherited together.

Recombination

The process by which genetic material is physically mixed during meiosis, resulting in offspring with combinations of traits that are different from either parent.

Test cross

A genetic cross between a homozygous recessive individual and an individual with an unknown genotype to determine the unknown genotype.

Chi-squared test

A statistical test used to determine if the observed frequencies of events differ from the expected frequencies.

P-value

The probability of obtaining results at least as extreme as the observed results under the null hypothesis.

Independent assortment

The principle that genes for different traits assort independently of one another in gamete formation.

Dihybrid cross

A genetic cross involving two traits, each represented by two alleles.

Expected ratio

The ratio of phenotypes or genotypes that is predicted based on Mendelian genetics.

Genetically linked genes

Genes that are located on the same chromosome and tend to be inherited together.

Recombination frequency

The proportion of recombinant offspring resulting from a genetic cross, used to estimate the distance between genes.