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Definition of dominance in genetics?
On any given locus, there are different possible forms of a gene, called "alleles." There is a dominant allele for each gene, often expressed by a capital letter. Recessive genes are frequently denoted with a minuscule letter. For example, "R" would represent a dominant allele and "r" a recessive one. Every individual has two alleles each gene (for example, Rr, RR, or rr); in this pair, a dominant allele is expressed if it is present, regardless of what other allele is carried. Recessive alleles, conversely, will only be expressed if there are two of them -- rr, in this case. There may be more than two alleles in each set, but they all follow the rule of dominance. For example, ra might be dominant to rb, which might be dominant to r. In some cases, dominance is incomplete. This means that individuals heterozygous for a certain gene -- meaning both the alleles are different, i.e. Rr, as opposed to the same (homozygous) -- will express a different trait than those homozygous recessive (rr) or dominant (RR).
How do you spell recesive?
The correct spelling is recessive (refers to non-dominant gene).
Another word for a heterozygous genotype?
A Heterozygous genotype means an organism that has both the dominant and the recessive gene.
What is the opposite of codominance?
The opposite of codominance would be ordinary dominance (the expression of a dominant gene over a recessive one).
What are the opposites of dominant?
in biology, the opposite is recessive in sexual behavior, the opposite is submissive in some terms, the opposite is rare
Do dominant genes affect recessive genes?
The dominant genes take over, and then the recessive genes hide away
Which genes are dominant and which are recessive?
Dominant genes are always expressed in preference to recessive genes in cased where both genes are present.
What do you call oransim that posssses two dominant or two recessive genes for a single trait?
Homozygous dominant for two dominant genes or homozygous recessive for two recessive genes.
How do dominant and recessive genes work?
explain how dominant genes work
Can recessive genes become dominant?
Recessive genes do not become dominant. Dominant genes mask the expression of recessive genes in the presence of both alleles. However, if a recessive gene is selected for over time through breeding, it can become more prevalent in a population.
What is the difference between dominant and recessive gene?
There are no such things as dominant and recessive genes. There are only dominant and recessive alleles. Dominant alleles are parts of a gene that present its features over the recessive allele, which is the one that is always masked by the dominant allele. The recessive allele's trait only shows if both of the alleles in a trait are recessive.
If an animal with 2 dominant genes for a trait has offspring with an animal with 2 recessive genes for same trait their offspring can only have what?
Their offspring will have dominant genes. However, if these offspring have offspring with an amimal with recessive genes, the recessive genes will show up.
The weaker of two genes is called what?
The weaker of two genes is called the recessive gene. In the presence of a dominant gene, the recessive gene is not expressed in the organism's phenotype.
Which versions of genes are dominant over others in genetic inheritance?
In genetic inheritance, dominant genes are versions of genes that are expressed over recessive genes. Dominant genes mask the effects of recessive genes when they are present together in an individual's genetic makeup.
What determines whether a person will have dominant or recessive hair color?
Hair color is determined by genes inherited from parents. Dominant genes for hair color will be expressed over recessive genes, resulting in the dominant color being displayed. If both parents pass on recessive genes, the recessive color will be seen.
What are some examples of dominant or recessive genes?
Examples of dominant genes include brown eyes and attached earlobes, where the dominant allele will be expressed over its recessive counterpart. Recessive genes include blue eyes and detached earlobes, which will only be expressed when an individual has two copies of the recessive allele.
What type of allele masks the expression of the recessive allele?
Two recessive alleles can not take over a dominant allele because there are only two alleles in a pair. This can only happen if there is a mutation because the dominant always takes over the recessive.
