Unit C Cell-Genetics

Question 1

Prophase (before)

Answer 1

Nuclear membrane dissolves, cytoskeleton forms
Cytokinesis: separation of cytoplasm

Question 2

Metaphase (middle)

Answer 2

Chromosomes and their copy line up in the middle (equator)

Question 3

Anaphase (segregation)

Answer 3

Chromosomes and their copies split

Question 4

Telophase (end)

Answer 4

Nuclear membrane reappears, cytoskeleton disappears

Question 5

Crossover

Answer 5

Variation

Question 6

Mitosis (list 4) definition

Answer 6

Asexual
Identical
Diploid
Somatic
ensures same chromosome count

Question 7

Meiosis (list 4) definition

Answer 7

Haploid
Unique
Gametes
Sexual
Divide chromosome count

Question 8

Fertilization

Answer 8

Shows addition of chromosome

Question 9

Prenatal (list 2)

Answer 9

Amniocentesis: withdrawal of amniotic fluid
Chorionic Villi Sampling: obtain sample cells from the placenta

Question 10

Postnatal

Answer 10

After the baby’s birth

Question 11

Karyotype

Answer 11

Distinguish one chromosome from another
ie. should have 23 pairs

Question 12

Fredrick Miescher

Answer 12

Discoverer of DNA

Question 13

Thomas Morgan

Answer 13

Discovered differences between Autosomes + Sex chromosomes

Question 14

Avery - McCarty - McLeod

Answer 14

DNA as Genetic Material

Question 15

Erwin Chargaff

Answer 15

Rules of Base Composition

Question 16

Rosalind Franklin

Answer 16

1st X-Ray picture of DNA