Test 5

Question 1

Which blood group can receive blood from anyone?

Answer 1

Group AB

Question 2

If your mother is blood group B and your father is blood group AB, which blood group could you not have?

Answer 2

Group O

Question 3

DNA polymerase enzyme starts at the — of the original DNA

Answer 3

3’ end (3 prime)

Question 4

What is aneuploidy?

Answer 4

A cell inherits the wrong number of chromosomes

Question 5

What is a disadvantage of fetal testing?

Answer 5

Can cause miscarriage 1-2% of the time

Question 6

When did Barbara McClintock show that genes were on chromosomes?

Answer 6

1941

Question 7

Give an example of aneuploidy where the person has only 45 chromosomes

Answer 7

Turner syndrome

Question 8

Which genetic disease affects the lungs?

Answer 8

Cystic fibrosis

Question 9

Which chromosome carries the gene for sickle cell anemia?

Answer 9

Chromosome 11

Question 10

Which of the following couples is most likely to have a baby with Down syndrome?

Answer 10

Father aged 24, mother aged 33

Question 11

Which drug prevents Rhesus problems?

Answer 11

Rhogam

Question 12

If you are blood group B, what two genotypes could you have?

Answer 12

I^B I^B or I^B i

Question 13

If you are Rhesus factor positive, and homozygous, what percentage of your children will be Rhesus negative if your spouse is Rhesus negative?

Answer 13

75%

Question 14

What antibodies are there in the blood of someone who is blood group O?

Answer 14

Anti-A and anti-B

Question 15

Huntington’s disease affects the — and is caused by a gene on chromosome —.

Answer 15

Nerves,

4

Question 16

Which enzyme joins together the Okazaki fragments?

Answer 16

DNA ligase

Question 17

Which scientist showed that DNA is the genetic material of some viruses?

Answer 17

Chase

Question 18

What does pathogenic mean?

Answer 18

Disease causing

Question 19

Which of the following is true for a trait caused by a dominant gene?

Answer 19

If you have that trait, one of your parents must have that trait

Question 20

People with genotype XYY suffer from — syndrome.

Answer 20

Jacobs

Question 21

In chorionic villus sampling, cells are removed from the

Answer 21

Placenta

Question 22

The structure of DNA was worked out in 1953 by Francis Crick, James Watson, and

Answer 22

Rosalind Franklin

Question 23

What does semi-conservative mean, in respect to DNA replication?

Answer 23

Each new pair of DNA strands contain one old strand and one new one

Question 24

If your father has Huntington’s disease, and is heterozygous, and your mother is normal, what is the risk that you will inherit the disease?

Answer 24

50%

Question 25

Frederick Griffith did an experiment in 1928 with — that showed that —.

Answer 25

Streptococcus,

Chemicals can change cells to different types