6.1.1 sexual and a sexual reproduction Flashcards
what is mitosis
type of nuclear division that gives rise to cells that are genetically identical, used for growth, repair of damaged tissues, replacement of cells and asexual reproduction
what is meiosis
Meiosis is a type of nuclear division that gives rise to cells that are genetically different
It is used to produce gametes (sex cells)
what is sexual reproduction
a process involving the fusion of the nuclei of two gametes (sex cells) to form a zygote (fertilised egg cell) and the production of offspring that are genetically different from each other
what are gametes
sex cells
what is a zygote
fertilised egg cell
what are gametes from animals
sperm cells and egg cells
ae gametes from flowering plants
pollen cells and egg cells
what is fertilisation
the fusion of gamete nuclei, and as each gamete comes from a different parent, there is variation in the offspring
what does the formation of gametes involve
meiosis
does asexual reproduction involve sex cells or fertilisation
nope
why is only one parent required for asexual reproduction
so there is no fusion of gametes and no mixing of genetic information
what is the result of only one parent being used
the offspring are genetically identical to the parent and to each other (clones)
what is asexual reproduction defined as
process resulting in genetically identical offspring from one parent
what is mitosis involved in
asexual reproduction
is meiosis involved in
sexual reproduction