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Flashcards in Lecture 3 Deck (5)
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1

what happens in meiosis 1

crossing over and segregation
maternal and paternal homologs pair up
chromosomes pulled to separate poles

2

what happens in meiosis 2

chromatids pulled to separate poles

3

what complex facilitates homologous pairing of chromosomes

synaptonemal complex
it aligns the chromosomes ready for anaphase
allows for genetic recombination

4

how many crossings over are there in meiosis

at least one but never more than 4

5

what is aneuploidy

monosomy - 1 copy of chromosome
trisomy - 3 copies of chromosome
caused by non disjunction