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Flashcards in Test 5 Deck (25):
1

Which blood group can receive blood from anyone?

Group AB

2

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

Group O

3

DNA polymerase enzyme starts at the --- of the original DNA

3' end (3 prime)

4

What is aneuploidy?

A cell inherits the wrong number of chromosomes

5

What is a disadvantage of fetal testing?

Can cause miscarriage 1-2% of the time

6

When did Barbara McClintock show that genes were on chromosomes?

1941

7

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

Turner syndrome

8

Which genetic disease affects the lungs?

Cystic fibrosis

9

Which chromosome carries the gene for sickle cell anemia?

Chromosome 11

10

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

Father aged 24, mother aged 33

11

Which drug prevents Rhesus problems?

Rhogam

12

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

I^B I^B or I^B i

13

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

75%

14

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

Anti-A and anti-B

15

Huntington's disease affects the --- and is caused by a gene on chromosome ---.

Nerves,
4

16

Which enzyme joins together the Okazaki fragments?

DNA ligase

17

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

Chase

18

What does pathogenic mean?

Disease causing

19

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

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

20

People with genotype XYY suffer from --- syndrome.

Jacobs

21

In chorionic villus sampling, cells are removed from the

Placenta

22

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

Rosalind Franklin

23

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

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

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?

50%

25

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

Streptococcus,
Chemicals can change cells to different types