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BMZ Lesson 2

BMZ Lessons 2

haploid 1n - sperm and egg 1 chromosome
diploid 2n -n=23 in humans two chromosomes
50% cost of sex fitness?
homologues the members of a pair of chromosomes are this
phases of the cell cycle G1-S(synthesis)-G2-M(Mitosis)
Red Queen Hypothesis the advantage of sexual reproduction at the level of individuals, and the constant evolutionary arms race between competing species. For an evolutionary system, continuing development is needed just in order to maintain its fitness relation to other spec.
Interphase G1-S-G2 G1- decide to divide S- chromosomes are replicated G2- Cell synthesizes proteins that are necessary for chromosome sorting and cell division M- first part is mitosis divide one cell nucleus into two cell nuclei
Prophase chromosomes have already replicated and then join to become sister chromotids
Prometaphase miotic spindle is ready adn sister chromatids attach to it
metaphase the sister chromatids are alligned in a row along the metaphase plate
anaphase connections between sister chromatids are broken and sepereate
telephase the chromosomes have reachedtheir respective poles nad decondense
cytokinesis cleavage furrow in animal cells cell plate in plants
sex linked found on one sex chromosome but not on the other
Created by: HaiiRaii