Search results
Results from the WOW.Com Content Network
Allele. An allele[1], or allelomorph, is a variant of the sequence of nucleotides at a particular location, or locus, on a DNA molecule. [2] Alleles can differ at a single position through single nucleotide polymorphisms (SNP), [3] but they can also have insertions and deletions of up to several thousand base pairs. [4]
The progeny in this case received two dominant alleles linked on one chromosome (referred to as coupling or cis arrangement). However, after crossover, some progeny could have received one parental chromosome with a dominant allele for one trait (e.g. Purple) linked to a recessive allele for a second trait (e.g. round) with the opposite being ...
An autosome is any chromosome other than a sex chromosome. In genetics, dominance is the phenomenon of one variant (allele) of a gene on a chromosome masking or overriding the effect of a different variant of the same gene on the other copy of the chromosome. [1][2] The first variant is termed dominant and the second is called recessive.
Genetic characteristics have alternate forms, each inherited from one of two parents. Today these are called alleles. One allele is dominant over the other. The phenotype reflects the dominant allele. Gametes are created by random segregation. Heterozygotic individuals produce gametes with an equal frequency of the two alleles.
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 ...
Each line shows one of the three possible genotypes. In population genetics, the Hardy–Weinberg principle, also known as the Hardy–Weinberg equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.
The genotype of an organism is its complete set of genetic material. [1] Genotype can also be used to refer to the alleles or variants an individual carries in a particular gene or genetic location. [2] The number of alleles an individual can have in a specific gene depends on the number of copies of each chromosome found in that species, also ...
Monohybrid cross. A monohybrid cross is a cross between two organisms with different variations at one genetic locus of interest. [1][2] The character (s) being studied in a monohybrid cross are governed by two or multiple variations for a single location of a gene. Then carry out such a cross, each parent is chosen to be homozygous or true ...