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Is light skin recessive or dominant?
The darkest skin is due to six dominant “doses” and the lightest skin is due to six recessive “doses”. Varying combinations of the alleles result in seven discrete colors.
Which skin Colour gene is dominant?
A genotype with all “dominant” capital genes (AABBCC) has the maximum amount of melanin and very dark skin. A genotype with all “recessive” small case genes (aabbcc) has the lowest amount of melanin and very light skin.
Is light skin genetic?
The main factor initiating the development of light skin was seen as a consequence of genetic mutation without an evolutionary selective pressure. The subsequent spread of light skin was thought to be caused by assortive mating and sexual selection contributed to an even lighter pigmentation in females.
Are the dark skin alleles dominant to the light skin alleles?
are the dark skin alleles dominant to the light skin alleles? no, neither allele is completely dominant to the other hetero-zygotes exhibit an intermediate phenotype. there are more than 7 shades of skin color.
Can 2 light skinned parents have a dark baby?
Can a couple sire a baby that is significantly darker or lighter than either individual? The short answer is, yes! A couple can have a baby with a skin color that isn’t between their own.
Is skin color a genetic trait?
Human skin color ranges from the darkest brown to the lightest hues. Differences in skin color among individuals is caused by variation in pigmentation, which is the result of genetics (inherited from one’s biological parents), the exposure to the sun, or both.
Is skin color a trait?
“Skin color is a classic variable trait in humans, and it’s thought to be adaptive,” Tishkoff said. “Analysis of the genetic basis of variation in skin color sheds light on how adaptive traits evolve, including those that play a role in disease risk.”
Is skin color incomplete dominance or Codominance?
To further understand the basic concept of incomplete dominance, some terms are defined briefly as follows: An allele is a form, version, or set of gene expressions. An organism consists of two alleles from each parent for one gene.