Cell Division/Cystic Fibrosis Genetics Case Study

Question 1

Where does mitosis occur?

Answer 1

eukaryotic cells, somatic/body cells

Question 2

Function of mitosis

Answer 2

growth of organism, replace/repair old cells

Question 3

Number of cell divisions in mitosis?

Answer 3

one

Question 4

Number of cells produced in mitosis?

Answer 4

two

Question 5

Are mitosis cells diploid or haploid?

Answer 5

diploid

Question 6

Are mitosis cells identical or unique?

Answer 6

identical

Question 7

Where does meiosis occur

Answer 7

reproductive organs (ovaries and testes)

Question 8

Function of meiosis cells/sex cells

Answer 8

reproduction/genetic diversity

Question 9

Number of cell divisions in meiosis?

Answer 9

two

Question 10

number of cells produced in meiosis

Answer 10

four

Question 11

Are meiosis cells diploid or haploid?

Answer 11

haploid

Question 12

Are new cells in meiosis genetically identical or unique?

Answer 12

unique

Question 13

sister chromatid

Answer 13

chromosome copies attached at their centromere

Question 14

homologous chromosome

Answer 14

chromosome that are the same size and shape

Question 15

when does replication occur?

Answer 15

interphase

Question 16

What does it mean for Nancy to be a carrier for cystic fibrosis? Why is Nancy not concerned for her health?

Answer 16

This means Nancy has a heterozygous gene for cystic fibrosis (Ff); she does not display the disease, only carries it in her genetic makeup

Question 17

Why would Nancy be concerned for her child’s health if she is a carrier for cystic fibrosis?

Answer 17

Although being a carrier means you do not display the medical condition yourself, it means there is a chance that the medical condition could be passed onto your children (depending on the genes of your partner)

Question 18

Why should Jake, Nancy’s partner, be tested for the CF gene?

Answer 18

He could be a possible carrier, increasing the chances that children with Nancy could result in a child with cystic fibrosis.

Question 19

When is DNA replicated?

Answer 19

Interphase I

Question 20

When does crossing over occur?

Answer 20

prophase I

Question 21

When do homologous chromosomes separate?

Answer 21

anaphase I

Question 22

When do sister chromatids separate?

Answer 22

anaphase II

Question 23

What trait must have two alleles to be expressed?

Answer 23

recessive traits