Diploid

Science / Genetics / Diploid: A full set of genetic material, consisting of paired chromosomes one chromosome from each parental set. Most animal cells except the gametes have a diploid set of chromosomes. The diploid human genome has 46 chromosomes. Compare haploid.

Meiosis

Science / Biology / Meiosis: Cell division in which the chromosomes replicate, followed by two nuclear divisions. Each of the resulting gametes (in animals, spores in plants) receives a haploid set of chromosomes. Reduction/divis MORE

Homolog

Science / Chemistry / Homolog: A compound belonging to a series of compounds that differ by a repeating group. For example, propanol (CH3CH2CH2OH), n-butanol (CH3CH2CH2CH2OH), and n-pentanol (CH3CH2CH2CH2CH2OH) are homologs; they b MORE

Autosome

Science / Genetics / Autosome: A chromosome not involved in sex determination. The diploid human genome consists of 46 chromosomes, 22 pairs of autosomes, and 1 pair of sex chromosomes (the x and y chromosomes). MORE

Genetic Locus

Science / Marine Biology / Genetic Locus: A location on a chromosome (possibly of a diploid organism with variants that segregate according to the rules of Mendelian heredity) MORE

Heterozygote

Science / Genetics / Heterozygote: Having two alleles that are different for a given gene. MORE

Zygote

Science / Marine Biology / Zygote: A fertilized egg. Or the diploid cell that results from the joining of two haploid gametes (sperm and egg) during sexual reproduction, that will cleave to form an embryo. See also fertilization, gamet MORE

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