Week 1 - Genetic reproduction

Question 1

Meiosis

Answer 1

Process of cell division that produces gametes (sperm/egg)

Question 2

What are gametes?

Answer 2

Sperm and egg

Question 3

What happens to the chromosomes during meiosis?

Answer 3

They divide and one of the pair goes to one gamete an the other of the pair goes to the other gamete

Question 4

How many chromosomes in each gamete?

Answer 4

Only half the usual number (23 instead of 46)

Question 5

How many possible chromosome combinations due to the random distribution of the 23 pairs to gametes?

Answer 5

2^23 possibilities or 8,388,608 possible chromosomes combinations

Question 6

What is the cell growth after meiosis called?

Answer 6

Mitosis

Question 7

What happens during mitosis

Answer 7

The set of 46 chromosomes duplicates and when cell divides each new cell receives a full compliment of 46 cells

Question 8

What is genetic recombination?

Answer 8

During early stages of meiosis, chromosomes overlap or crossover one another and break apart at the points of contact, exchanging sections of chromosome.

Question 9

What is the result of genetic recombination?

Answer 9

Parents rarely pass on intact chromosomal clusters of genes to children.

Question 10

Tell me about the uniqueness of gametes

Answer 10

• Each gamete contains chromosomes that are unique spliced together combinations of chromosomes inherited from your father and mother.