Mendel Genetics

Question 1

What is the most common heritable disorder in humans?

Answer 1

Tooth agenesis (4-7%, if 3rd molars in included=20%)

Question 2

What are the Three laws of mendelian genetics?

Answer 2

1-Law of Segregation
2-Law of Independent Assortment
3-Law of Dominance

Question 3

Blood type is a good example of what?

Answer 3

Co-dominance (4 possible genotypes A,B,AB,O)

Question 4

Snap dragon color is a good example of what?

Answer 4

incomplete dominance (Red or white alleles, two together result in third phenotype, pink)

Question 5

Calico cats are a good example of what?

Answer 5

Mosaicism (different cells have different genotypes)

Question 6

If the son is ALWAYS affected the trait is considered to be?

Answer 6

Y-linked trait

Question 7

If a trait affects 50% sons and 50% daughters it is likely what?

Answer 7

X-linked dominant

Question 8

If a trait affects only 50% of the sons, daughters unaffected it is likely what?

Answer 8

X-linked recessive (daughters can be carriers but unaffected X dad dominates phenotypically)