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inysia [295]
3 years ago
6

Tail length in a certain species of armadillo falls along a continuum, following a normal distribution. Assuming that environmen

tal factors do not play an important role in determining tail length, this type of variation probably reflects __________.
Biology
1 answer:
Stella [2.4K]3 years ago
6 0

Answer:

Polygenic inheritance

Explanation:

When multiple genes present at different loci on chromosomes regulate a single genetic trait, the trait is said to be polygenic and the inheritance is a polygenic inheritance. The phenotype of the individual is regulated by an allele of each gene in an additive manner. The sum total of phenotypic effects of each allele of all the genes determines the final phenotype of the individuals.

These traits not present in discrete contrasting pairs (such as tall and short) but exhibit quantitative variations. For example, skin color in humans is regulated by multiple genes and the phenotype of the individual ranges from very light to very dark with many intermediates in between.

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