ch 13 woobie

allele

an alternative form of a gene is a(n) ________ and an example would be how some pea plants are tall and some are short

2 4

meiosis I gives you _ cells and meiosis II gives you _ cells

homologous chromosomes yes sister chromatids no

meiosis I has __________ _______ and crossing over? (yes/no) and meiosis II has ________ _________ and crossing over? (yes/no)

meiosis no po

interphase G1, cell is growing to prepare for _______, can you see the chromatin? (yes/no) and its mr _____

pod

interphase s phase of meiosis is mr _____

condense fragments forms tetrod bivalent crossing over chiasmata

prophase I of meiosis a lot happens! sister chromatids ________, the nuclear envelope _______, and the spindle apparatus _____. ALSO the homologous chromosomes create a ______, also known as a _______ (ib is so persnickety) there is ________ ____, and the __________ is the point of attachemtn between 2 non sister chromatids (which is the result of the crossing over)

metaphase plate

in metaphase I, the homologous chromasomes line up where?

law of independent assortment

what is the law that says one sister chromatid doesn’t influence how other sister chromatids line up

interphase g1 interphase s phase interphase g2 prophase I metaphase I anaphase I telophase I/cytokinesis I prophase II metaphase II anaphase II telophase II/cytokinesis II

write out meiosis in order like we had it on the woobie not including the end product which is 4 genetically different haploid cells

anaphase II

in which phase do the sister chromatids separate and move towards the poles

law of segregation

what law says that there’s only one allele for each trait per gamete

splitting of the cytoplasm

cytokinesis is the

2

ok prophase II is now happening, how many cells are there

yes

if i wrote prophase 1 would it be wrong

no no

in prophase II, is it homologous chromosomes still? (yes/no) and does crossing over happen again? (yes/no)

disappears decondense forms

prophase II, the nuclear envelope ________, sister chromatids ________, and the spindle apparatus _____

complete

metaphase II, the spindle apparatus is ________ and per usual the sister chromatids are lining up at the metaphase plate

interphase g1

in what phase do the centrioles replicate

4 genetically different haploid cells

what does meiosis create

non-disjunction

___________ is what creates too many or too few chromosomes

homologous chromosome

in meiosis I, non-disjunction is bc of the failure of ________ ________ separation

2 2 0

non-disjunction in meiosis I creates _ (n+1) and _ (n-1) and _ (n)

sister chromatid

in meiosis II, non-disjunction is bc of the failure of ______ ________ separation

1 1 2

non-disjunction in meiosis II creates _ (n+1) and _ (n-1) and _n

okay!

go look at your woobie and try and draw some of it!