Inheritance - sexual and asexual reproduction Flashcards
how many chromosomes do human cells contain?
23 pairs
what are gametes?
where chromosomes aren’t paired
gametes in humans?
sperm and egg cells
how many chromosomes do sperm and egg cells both have?
23 single chromosomes
what are gametes made by?
meiosis (cell division)
what does meiosis produce that mitosis does not?
non identical cells
what can meiosis also take place in?
flowering plants
what does sexual reproduction involve?
the fusion of male and female gametes - fertilisation. meaning there is a mixing of genetic information
- involves gametes
- meiosis take place
what does the offspring receive?
genetic information from both male and female parents
what is an impact of gametes?
they are all different so we can see variation in the offspring
what does asexual reproduction involve?
- one parent
- doesn’t involve gametes
- no mixing of genetic variation
- offspring genetically identical (clones)
- meiosis’s doesn’t take place
- involved mitosis