Mitosis and Meiosis
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—cells are the fastest regenerating cells. they replace themseves every —–
skin, 2 weeks
what are somatic cells
every type of cell except reproductive cells.
what is the differenrt between somatic cells and reproductive cells(gametes)
the reproductive cells only have one set of chromosomes for a total of 23 chromosomes in each cell (haploids)
mitosis: type of cells obtained
diploid and somatic
meiosis: type of cells obtained
haploid and gametes
mitosis: functions
growth and repair of cells
meiosis: functions
production of reproductive cells to allow for sexual repoduction
mitosis: end product
-2 daughter cells -diploid: 23 pairs of chromosomes in each cell -they are genetically identical to each other and mother cell
meiosis: end product
-4 daughter cells -haploid: 23 single chromosomes i each cells -new cells are not genetically identical to each other or to mother cell.
when studying pea plants what were the 2 traits that appeared
dominant and recessive, ech trait has two alleles
example of dominant trait and recessive trait with pea plants
-dominant: round pea -recessive: irregular shape
law of dominance
if you inherit one dominant allele form one parent and one recessive allele form the other the dominant always wins.
name the 3 factors that play a role in genetic diversity
-genetic recombination -genetic mutation -population mixing
genetic recombination
chromosomes exchange gene during meiosis
genetic mutation
random during mitosis: either cells get destroyed or mutation is passed on. (mutation are not hereditary unless in reproductive cells during meiosis)
population mixing
when traveling, reproduce through natural selection traits can develop within a certain population