genetics vocab Flashcards
Homologous
having the same relative position, value, or structure
Diploid
a cell that contains two complete sets of chromosomes - 46
Haploid
A cell that only contains one set of chromosomes - 23
Meiosis
A specialized type of cell division occurring in sexually reproducing organisms
Tetrad
A group of 4 chromatids formed during prophase of meiosis when two homologous chromosomes pair
Crossing-over
Exchange of genetic material between chromatids during meiosis, causing new combos of alleles and genetic variation in offspring
Gene-linkage
The tendency for two or more genes located together on the same chromosome to be inherited together during meiosis
Gene-mapping
The process of determining the exact location of genes on a chromosome.
Gamete
A reproductive cell
Independant assortment
The claim that when genes are passed down from parent to offspring, each gene is inherited separately from others
Punnet square
A table in which all of the possible outcomes for a genetic cross between two individuals with known genotypes are given
Allele
One of two or more versions of a genetic sequence at a particular region on a chromosome