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Zygosity (the noun, zygote, is from the Greek zygotos "yoked," from zygon "yoke") (/ zaɪˈɡɒsɪti /) is the degree to which both copies of a chromosome or gene have the same genetic sequence. In other words, it is the degree of similarity of the alleles in an organism. Most eukaryotes have two matching sets of chromosomes; that is, they are ...
Locus (genetics) In genetics, a locus (pl.: loci) is a specific, fixed position on a chromosome where a particular gene or genetic marker is located. [1] Each chromosome carries many genes, with each gene occupying a different position or locus; in humans, the total number of protein-coding genes in a complete haploid set of 23 chromosomes is ...
Docking (the insertion of one man's penis into another man's foreskin) is also practiced. Manual sex is another non-penetrative sex act that can occur between men. This includes handjobs, which is the use of one's hands to stimulate someone else's penis or scrotum, and anal fingering, which is the use of one's fingers to stimulate someone's anus.
The Punnett square is a square diagram that is used to predict the genotypes of a particular cross or breeding experiment. It is named after Reginald C. Punnett, who devised the approach in 1905. [3][4][5][6][7][8] The diagram is used by biologists to determine the probability of an offspring having a particular genotype.
Gay male speech has been the focus of numerous modern stereotypes, as well as sociolinguistic studies, particularly within North American English.Scientific research has uncovered phonetically significant features produced by many gay men and demonstrated that listeners accurately guess speakers' sexual orientation at rates greater than chance. [1]
The following is an alphabetical list of Greek and Latin roots, stems, and prefixes commonly used in the English language from H to O. See also the lists from A to G and from P to Z.
Hermaphrodite. v. t. e. A gamete (/ ˈɡæmiːt /; from Ancient Greek γαμετή (gametḗ) 'wife', ultimately from Ancient Greek γάμος (gámos) 'marriage') is a haploid cell that fuses with another haploid cell during fertilization in organisms that reproduce sexually. [1] Gametes are an organism's reproductive cells, also referred to ...
Lethal allele. Lethal alleles (also referred to as lethal or lethals) are alleles that cause the death of the organism that carries them. They are usually a result of mutations in genes that are essential for growth or development. [1] Lethal alleles may be recessive, dominant, or conditional depending on the gene or genes involved.