Sexual and Asexual reproduction Flashcards
What is sexual reproduction
The creation of offspring by two parents who have gametes
What cells does sexual reproduction involve
Gametes// sex cells
Name the 2 gametes
Sperm cell
Egg cell
What do gametes contain
Chromosomes
What happens in fertilisation
The sperm and egg cell FUSE together to form a zygote which eventually becomes an embryo
How many chromosomes do gametes contain (individually)
23
How many chromosomes does a zygote have
46
How are the embryos genes formed
It inherits half of the genes from the mother and half of the genes from the father
What does the mix of inherited genes in an embryo leas to
Genetic variation
What is unique about the cells produced in sexual reproduction
They are not genetically identical
What are the 2 purposes of asexual reproduction
Produce offspring of bacteria and some plants
Plants and animals growing and producing replacement cells
What is different about asexual reproduction to sexual reproduction
3 thing
Only has one parent
No gametes are involved
Offspring are genetically identical to parent and each other
What happens in asexual reproduction
An ordinary cell makes a new cell by dividing into 2
How many parents are there in asexual reproduction
One
