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SB3b meiosis
Progession questions:-
* what happens in meiosis?
* Why is meiosis necessary for sexual reproduction?
*what is the role of the genome in the manufacture of proteins?
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| A | B |
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| zygote | a single fertilised egg cell |
| fertilisation | the fusion of the nuclei of 2 gametes |
| genome | the DNA of an organism |
| gene | DNA sections that code for a protein |
| chromosomes are made of | genes |
| proteins are polymers | of aminoacids |
| 2n = | diploid |
| 1n = | haploid |
| number of chromosomes in a human sperm cell | 23 |
| number of chromosomes in a human liver cell | 46 |
| mitosis makes | diploid cells |
| meiosis make | haploid cells |
| meiosis produces | 4 daughter cells |
| mitosis produces | 2 daughter cells |
| meiosis | allows variation |
| mitosis | does not allow variation |
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