Meiosis Flashcards
(5 cards)
1
Q
How are gametes made
A
Meiosis
2
Q
Where does meiosis only happen in humans
A
The reproductive organs
3
Q
Process of meiosis
- it d… its genetic i…
- it then arranges the c… into p…
- in the first … the chromosome pairs line up in … of the cell
- the pairs are p… apart so each cell only has … copy of each c…
- in the second … the chromosomes line up at the … of the cell and the … of the chromosomes are pulled apart by cell …
- this produces … genetically … gametes
A
- it duplicates its generic information
- it then arranges the chromosomes into pairs
- in the first division the chromosome pairs line up in centre of the cell
- the pairs are pulled apart so each cell only has one copy of each chromosome
- in the second division the chromosomes line up at the centre of the cell and the arms of the chromosomes are pulled apart by cell fibres
- this produces four genetically different gametes
4
Q
How many divisions are in meiosis
A
2
5
Q
What happened after 2 gametes have fused
-The resulting cell … by m… to make a copy of i…
-this repeated to p… lots of cells in an e…
-as it d… it’s cells start to d… into different s… cells
A
-The resulting cell divides by mitosis to make a copy of itself
-this repeated to produce lots of cells in an embryo
-as it develops it’s cells start to differentiate into different specialised cells