Some traits, such human height, are controlled by more than one set of polygenic

Question

Some traits, such human height, are controlled by more than one set of polygenic inheritance.

Each set of  ____________  has its own expressed characteristics, which together are additive, resulting in a continuum of  ____________ . This is called  ____________ .

Some traits, such as onset of some cancers in humans, are controlled not only by alleles, but by environmental factors as well. These traits are called  ____________ .

When a single gene has more than one effect, it is called  ____________ .

This can often lead to syndromes, such as  ____________ , a disorder that results in a deficiency in  ____________ .

This disease can cause  ____________ , photosensitivity, paralysis, and dark urine.

Explanation / Answer

1) alleles

2)traits

3)genotype

4)Environmental traits

5) pleiotropy

6)porphyria

7) iron catalysing enzymes

8)coma

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