Science lesson 8

Question 1

What is a pedigree?

Answer 1

A family tree used to track traits

Question 2

What do the roman numerals on the side of each row of shapes mean?

Answer 2

They represent generations (i is first generation, II is second generation, you get the point :D)

Question 3

What shape represents a boy?

Answer 3

A square

Question 4

What shape represents a girl?

Answer 4

A circle

Question 5

What does it mean if a shape is coloured in?

Answer 5

The person has the trait the pedigree is tracking

Question 6

What is the marriage line?

Answer 6

It represents the marriage of two people

Question 7

If two unaffected parents make an affected offspring,
1. Is the trait dominant or recessive
2. Are the parents homozygous or heterozygous
3. What is this called

Answer 7

1. Dominant
2. Heterozygous
3. Autosomal recessive

Question 8

True or False, boys are hemizygous

Answer 8

True :D

Question 9

What is hemophilia?

Answer 9

A disease where the clotting factor in the blood cannot be produced and cuts do not clot.
This is commonly tracked in the royal family

Question 10

Is hemophilia an X-Linked or Y-linked trait?

Answer 10

X-linked