Ch 7 Patterns of Inheritance

Question 1

What does co dominance look like?

Answer 1

Both dominate alleles are fully expressed. No blending of traits.

Question 2

What does incomplete dominance look like?

Answer 2

A blending of the traits.

Question 3

Why do some traits have a huge range of variations?

Answer 3

Because they could be polygenetic traits, meaning the are controlled by many different genes resulting in may combinations.

Question 4

What are sex linked traits?

Answer 4

Trait carried on the x chromosome.

Question 5

Why do sex linked traits show up in men more frequently than women??

Answer 5

Men only have 1 X chromosome so any allele they get, even if it is recessive is expressed.

Question 6

Why are can men not be carries but women can of sex linked traits?

Answer 6

Men only have 1 X chromosome so any allele they get, even if it is recessive is expressed. Women have 2 X chromosomes so their repressive allele could be covered up by a dominate one, yet still passed on to an offspring.

Question 7

Where do boy get most of their traits on the y chromosome?

Answer 7

No, just like women the majority of traits are coded for on the 22 pair of autosomal chromosomes. The y is the smallest chromosome and hold the fewest traits/genes