autosomal environment homozygous incomplete dominance polygenic multifactorial h

Question

autosomal

environment

homozygous

incomplete dominance

polygenic

multifactorial

height

1. Many traits are ____________ , meaning that they involve several genes interacting together to determine a trait. An example is eye color.

2. Factors within the ____________ such as nutrition, physical activity, and exposure to toxins can influence gene expression or traits.

3. Traits that are the result of one or more genes plus environmental influences are called ____________ traits. Examples are ____________ , skin color, and the tendency to develop heart disease -- each of which are also polygenic.

Explanation / Answer

1. Many traits are decided by multiple genes like eye colur they are called polygenic traits.

2. Environmental factors influence the gene ex0ression like gene may overexpressed in higher temprature and may be inhibited by toxin presence.

3. Some traits are decided by more than one gene and also influenced by emvironmental effect are called multifactorial traits. Mean multiple factors decide their expression. Some example are height, skin colour etc. Skin colour etc are autosomal and are polygenic.

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