Vertigo and disequilibrium may cause a feeling of dizziness, but those two terms describe different symptoms. Vertigo is characterized by a spinning sensation, like the room is moving. It may also feel like motion sickness or as if youâre leaning to one side. Disequilibrium is a loss of balance or equilibrium.
Dominance in genetics is a relationship between alleles of one gene, in which the effect on phenotype of one allele masks the contribution of a second allele at the same locus. The first allele is dominant and the second allele is recessive.For genes on an autosome (any chromosome other than a sex chromosome), the alleles and their associated traits are autosomal dominant or autosomal recessive. Dominance is a key concept in Mendelian inheritance and classical genetics.lso, an allele may be dominant for a particular aspect of phenotype but not for other aspects influenced by the same gene. Dominance differs from epistasis, a relationship in which an allele of one gene affects the expression of another allele at a different gene.
There are different forms of the same trait. In this next video notice the different shapes of the noses. These would be examples of alleles because they are different forms of the same trait Traits can also be dominant or recessive Each individual has two alleles for each gene, one coming from each female and the other from the male. With dominant traits, an individual carries either two dominant genes or one dominant and one recessive gene. A dominant gene can be expressed even if only one copy of the gene is present. A recessive trait will only be expressed if an individual has two recessive alleles. In this example purple color is dominant over white color