Asexual and Sexual Reproduction

robthescienceguy's version from 2015-10-05 00:29

Section 1

Question Answer
Asexual ReproductionDNA is copied and all subsequent cells are genetically equal
Fissionoccurs in bacteria (asexual) 1- 2- 4- 8- 16
Buddingin yeast and hydra (asexual) 1- 1big 1small- 2big- 2big 2small
In PlantsVegetative Propagation(ex. creeping charlie), Bulbs, Adventitious Shoots, Clonal Colony, Plant lets
Sporulation in mosses and molds (asexual)
FragmentationIn starfish (asexual), if cut up each cut piece will form new individuals
Parthenogenesiswhen an unfertilized egg develops into a new individual (ex. bees wasps, ants)
Mitosisprocess in humans and other eukaryotes

Section 2

Question Answer
Sexual ReproductionDNA exchange between chromosomes, involves formation of eggs and sperm, new individuals are genetically unique
Chromosomea section of coiled DNA (humans have 23 pairs)
Chromatidone pair of identical pieces of DNA (exist during prophase, split during anaphase)
Spermatogenesisprocess of sperm production, from puberty to death, occurs in testes, takes 2 months
Oogenesisprocess of egg production, occurs in ovaries, eggs start to form when in womb, at puberty a number of eggs finish development each month
Menopausewhen all of a woman's eggs have been used up (usually age 40-60)
Karyotypea photograph of all chromosomes of a species, from biggest to smallest
Meiosisprocess of dividing DNA to make eggs and sperm
Diploidnumber of c'somes in a body or somatic cell (ex. humans have 46[23 pairs]=2N)
Haploidnumber of c'somes in gametes (ex. humans have 23 singletons=1N)
Ploidynumber of unique c'somes a species has (humans=23)
Sex Chromosomes