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 occurs when neither allele is fully dominant over the other. In snapdragons, a red-flowered plant crossed with a white-flowered plant produces pink-flowered offspring, showing an intermediate color.
This is because there are two traits.
on the blood determine a person’s blood type. ⇒ Antibodies in the blood attack foreign blood not compatible with the antigens on the blood.
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.
Polygenic traits are determined by multiple blood typescells✔ genes received from each parent.
Explain why polygenic traits are expressed through quantitative variation, using skin color as an example.
Skin color is controlled by many genes, and alleles that contribute to darker or lighter pigment have additive effects. The total combination of alleles determines the shade, so people in the same family can have a range of skin colors. Someone who inherits more dark-pigment alleles may be darker than their parents, and the range of outcomes often forms a bell-shaped curve.
What did you include in your response? Check all that apply.
Did you find these answers helpful?