Sexual and asexual reproduction :
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31 Terms
What do condoms prevent ?
The sperm reaching the egg
What do IUD prevent ?
The embryo from implanting
3 facts about asexual reproduction?
Produce clones/ offspring are genetically identical
No mixing of genetic info
No fusing of gametes
What are gametes ?
Any reproductive cell
How many chromosomes does each gamete have ?
23
What are the 4 stages of mitosis ?
DNA is replicated
Chromosomes line up in the centre
Chromosomes are pulled apart by spindle fibres
The cells split into two daughter cells
Which type of reproduction requires mitosis ?
Asexual
What does the human body use mitosis for ?
Growth and repairs
How many chromosomes are typically in a human body cell ?
46
What type of reproduction is meiosis required for ?
Sexual
3 reasons why meiosis is similar to mitosis ?
DNA is replicated
Organellles are duplicated
Original cell divides to produce new ones
3 was in which Meiosis is different to Mitosis is ?
4 daughter cells are made which are genetically different
Gametes contain half the number of chromosomes
There are 2 divisions
In asexual reproduction how many parents are their ?
1
In sexual reproduction how many parents are their ?
2
Is there fusion of gametes in asexual reproduction ?
No
Is there fusion of gametes in sexual reproduction ?
Yes
Are the offspring genetically identical to the parent in asexual reproduction?
Yes
Are their offspring genetically identical to the parent in sexual reproduction?
No
Do the offspring show genetic variation in asexual reproduction?
No
Do the offspring show genetic variation in sexual reproduction ?
Yes
What do we use Meiosis for ?
Fertilisation
What do we use mitosis for ?
Growth and repair
What is the number of cell division in Meiosis ?
2
What is the number of cell division in mitosis ?
1
In Meiosis what is the number of chromosomes after cell division ?
23
In Mitosis what is the number of chromosomes after cell division ?
46
In Meiosis what is the the number of daughter cells produced ?
4
in mitosis what is the number of daughter cells produced ?
2
in meiosis does it cause genetic variation ?
Yes
In mitosis does it cause genetic variation ?
No