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Bio
Revised meiosis
| Question | Answer |
|---|---|
| What is the term for when chromosomes exchange genetic material? | crossing over |
| Term for any other cell but a reproductive cell (like a skin cell)? | somatic cell |
| What are the 3 ways to get genetic variation through meiosis? | -crossing over -independent assortment -random fertilization |
| What form of asexual reproduction do prokaryotic organisms do? | binary fission |
| In humans the first 22 pairs are called what? | autosomes |
| In what stage does independent assortment occur? | metaphase I |
| What are the 3 reasons DNA is important? | protein production, directs cell activity, determines traits |
| Term for a photo of chromosomes in a dividing cell, arranged by size, that can determine chromosomal abnormalities? | karyotype |
| What is the term for meiosis in males? | spermatogenesis |
| A reproductive cell is haploid or diploid? | haploid |
| What are chromosomes/chromatin composed of? | DNA and protein |
| What type of cell, and how many cells, do we get after telephase I? | 2 cells, haploid |
| What are the two most important purposes of the process of meiosis? | -to half the number of chromosomes -to create genetic variation |
| What are the 3 forms of asexual reproduction? | -binary fission -fragmentation -budding |
| What is the term for when the two chromosomes (a pair) are close together? | tetrad |
| Term for segment of DNA that codes for a particular protein? | gene |
| In what stage in meiosis do sister chromatids line up along the equator? | metaphase II |
| If a human has an XX for their sex chromosomes, are they male or female? | female |
| A somatic cell is haploid or diploid? | diploid |
| What is the term for meiosis in females? | oogenesis |
| What is main disadvantage of asexual reproduction? | no genetic variation |
| How many pairs of homologous chromosomes do humans have? | 23 pairs (46 chromosomes) |
| In what stage does the tetrads line up in the middle? | metaphase I |
| What type of cell, and how many cells, do we get after telephase II? | 4 cells, haploid |
| If a human has an XY for their sex chromosomes, are they male or female? | male |
| What is a general term for a reproductive cell? | gamete |
| In what stage does crossing over occur? | prophase I |
| In what stage do the tetrads move apart to opposite poles? | anaphase I |
| In humans the 23rd pair is called what? | sex chromosomes |
Created by:
thompsondk
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