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Duncan Bio Ch 10/11b

Meiosis

QuestionAnswer
What is meiosis? the process that makes haploid gamete cells
what are the gametes? sex cells: sperm (male) and egg(female)
before starting meiosis, the original cells are diploid. what does this mean? how many total chromosomes are there? Diploid means 2 sets of chromosomes (1 set from male parent, 1 set from female parent). there will be 46 total chromosomes in a diploid human cell
After going through meiosis, the daughter cells are haploid. what does this mean? How many chromosomes are there in each daughter cell? Haploid means 1 set of chromosomes (=half the DNA of the original cell). there will be 23 chromosomes in a haploid cell.
How many cell divisions are there in meiosis? 2 cell divisions
How many daughter cells are made in meiosis? 4 daughter cells
Are the cells made during meiosis genetically identical or different from each other? they are genetically different
What is crossing over? When chromosomes switch genetic material during prophase 1 when they are paired up with their homologous (matching chromosome)
Why is it beneficial to make many gametes that are genetically different? this will produce a variety of different offspring, which will give them a great chance to survive.
What are the stages of meiosis? I-PMAT-C (1) PMAT-C (2)
Created by: msduncan
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