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chapter 11
sexual reproduction and meiosis
| Question | Answer |
|---|---|
| sexual reproduction is..... | 2 parents give genetic material to produce offspring |
| what is a somatic cell.... | do not participate in sexual reproduction |
| how many chromosomes does a human somatic cell have | 46 |
| what is a germ cell | specializes in sexual reproduction |
| what is another name for a reproductive cell | gamete |
| male gamete? | sperm |
| female gamete? | ovum(egg) |
| how many chromosomes do human gametes have | 23 |
| what is a zygote | fusion of gametes |
| define diploid | 2 sets of chromosomes (cell) |
| diploid symbol | 2n |
| define haploid | 1 set of chromosome |
| haploid symbol | n |
| male animals produce gametes | spermatogenesis |
| female animals produce gametes | oogenisis |
| name the human sex chromosomes | x and y |
| what are homologous chromosomes | chromosomes similar in size shape and genes |
| what happens during crossing over | exchange of genetic material |
| in meiosis what phase does crossing over occur | prophase 1 |
| what is separated in anaphase 1 | homologous chromosomes |
| how many cells are formed in telophase1 | 2 |
| what lines up in metaphase 2 | single chromosomes |
| what is separated in anaphase 2 | sister chromatids |
| how many cells are formed at the end of telophase 2 | 4 |
| what types of cells are formed in the end of telophase 2 | gametes |
| what are the 3 contributions to genetic variations | crossing over independent assortment random fertilization |
Created by:
cadencia2003