Unit 7: Notes 4 - Mutiple Alleles, Polygenic Traits, Sex-Linked

Question 1

What are Mutiple Alleles?

Answer 1

three or more alleles for a particular gene are present across a population.

Question 2

Do diploid organisms have multiple alleles?

Answer 2

NOO, only more than two verisons of that gene could be possible.

Question 3

What is Polygenic inheritance?

Answer 3

Polygenic inheritance refers to one phenotypic trait being produced by the cumulative effects of two or more genes, involving several loci on a pair of
homologous chromosomes.
BASICALLY MANY GENES for ONE trait!!

Question 4

What is Sex-Linked Traits

Answer 4

traits controlled by genes on the sex chromosomes

Question 5

Do males have only one X chromosome, what happens to the trait?

Answer 5

Yes, the trait will have only ONE allele, so if it was recessive, the recessive allele would show up

Question 6

Do Males always inherit their X chromosome from their mother?

Answer 6

Yes

Question 7

Are recessive X-linked traits always expressed in males?

Answer 7

Yes

Question 8

Do males inherit the recessive X-linked traits more frequently than females?

Answer 8

Yes