Exam 3 Second Lecture

Question 1

What is the main difference between Mitosis and Meiosis?

Answer 1

Meiosis pairs homologs (crossing over)

Question 2

What is the process of spermato genesis?

Answer 2

primary spermatocyte splits in Meoisis I to secondary spermatocyte (two of them), then Meosis II splits them again into sperm.

Question 3

How many gametes does Spermato Genesis end up with?

Answer 3

4

Question 4

What is the process of Oogenesis?

Answer 4

Primary oocyte undergos Meiosis I and splits to one secondary oocyte and a polar body. secondary oocyte splits (Meiosis II) and makes another oocyte and polar body.

Question 5

How many gametes are produced after Oogenesis?

Answer 5

1

Question 6

What is a common error in Meiosis?

Answer 6

Non-disfunction

Question 7

What is Non-disfunction?

Answer 7

Some or all dyads fail to separate in Meiosis I.

Question 8

What are the two different types of non-disfunction?

Answer 8

Aneuploidy and Polyploidy

Question 9

Describe Aneuploidy

Answer 9

The number of chromosomes is NOT a whole multiple of hyploid number.

Question 10

What is trisomy?

Answer 10

Results in an extra copy of chromosomes

Question 11

What is monosomy?

Answer 11

Results in missing a pair of chromosomes

Question 12

Describe Polyploidy

Answer 12

More than two sets of a complete chromosome