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pva 7th s4ch
| Question | Answer |
|---|---|
| one disadvantage of sexual reproduction (writeout) | time and energy |
| an ethical concern | human cloning |
| cannot undergo mitosis because they do not have a nucleus which is necessary for mitosis | bacteria |
| prokaryotes perform cell division | fission |
| takes place in the reproductive cells | meiosis |
| takes place in body cells | mitosis |
| reproduces asexually by fission | bacteria |
| forms of asexual reproduction | budding and regeneration |
| more forms of asexual reproduction | fission, budding, regeneration, cloning, tissue culture |
| fission begins in prokaryote when the DNA is | copied |
| haploid cells are formed | telephase ll |
| a body cell divides | once |
| produced by a reproductive cell duuring meiosis | 4 cells |
| produces sex cell | meiosis |
| produces body cells | mitosis |
| numbers of chromosomes are usually found in the sex cells of an organism | haploid |
| Meiosis envolves ----- divisions of the nucleus and the cytoplasm, and in the ------- | two, end results in 4 cells |
| when the cytoplasm and its contents divide | cytokenisis |
| a child inherits chromosomes from | both parents |
| goes through mitosis as one of the processes after fertilization | embryo |
| each human cell has | 23 pairs of chromosomes |
| happens in body cells | mitosis |
| the nucleolus disappears during | prophase ll |
| fertilization | joining of two sex cells |
| zygote | cell that forms in fertilization |
| eggs | female sex cells |
| meiosis | only takes place only in sex reproductive organs |
| sperm | male sex cells |