SECTION 2SEXUAL REPRODUCTION AND MEIOSIS Pages 106-111
SEXUAL REPRODUCTON sexual reproduction spermzygote fertilization egg
DIPLOID CELLScells have pairs ofchromosomesexamples: skin cells,muscle cells, red bloodcells, eye cells, etc.
HAPLOID CELLScells that do not havepairs of chromosomesonly have half thenumber ofchromosomes thatother cells haveexample: sex cells -sperm and egg
MEIOSIS AND SEX CELLSMeiosis produces haploid sex cellsDuring meiosis, 2 divisions of the nucleus occur.The division are called: meiosis I meiosis IIThe steps have names like those in mitosis and arenumbered for the division in which they occur.
ant 2 turkey 82 cat 38 hermit crab 254 cow 60 goldﬁsh 94chicken 78 rabbit 44kangaroo 12mosquito 6 What species, out of every living species, has the most chromosomes???
2 0 0 es!! 1 oso m ro m reticulatumc hophioglossum
MISTAKES IN MEIOSISMistakes are more common in plants than animalcells.If a mistake occurs in animal cells, sometimes thezygote dies. If the zygote lives, every cell in thatorganism will have the wrong amount ofchromosomes and may not grow normally.