explains inheritance resulting in two dominant alleles being expressed in the offspring, with neither trait being masked.
explains traits that are neither dominant nor recessive, resulting in a third phenotype in the offspring that appears to blend the traits from the parents.
are traits resulting from the expression of multiple genes from different loci of different chromosomes.
is a protein found in blood that is represented by a + or – sign, which affects the compatibility of blood with other blood types.
Explain incomplete dominance, using snapdragon flowers as an example.
Incomplete dominance is seen in offspring that have a third phenotype not seen in the parents. Snapdragons are an example. The third phenotype results when a snapdragon with the red pigment protein crosses with a snapdragon with a defective gene that produces no pigment, resulting in a white snapdragon. The offspring receive one allele from each parent, resulting in half the amount of pigmentation for red color being expressed. The offspring will be pink snapdragons instead of red or white.
on the blood determine a person’s blood type. in the blood attack foreign blood not compatible with the antigens on the blood.
Polygenic traits are determined by multiple blood typescells✔ genes received from each parent.
This is because there are two traits.
blood is known as the universal donor, which means it can be given to anyone needing a blood transfusion. blood is known as the universal recipient, which means it can receive all blood types during a transfusion.
Explain why polygenic traits are expressed through quantitative variation, using skin color as an example.
If there are more alleles present for darker skin tone, then the offspring will have darker skin pigment than the parents may have. There can be varying expressions of pigment color from dark to light based on the alleles received, even in the same family. The sum of the allele combinations determines the expression of the trait from one degree to the other. A bell curve shows the quantitative variation.
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