Sexual Reproduction Produces Genetically Different Cells Flashcards
What is sexual reproduction?
Where genetic information from two organisms is combined to produce offspring which are genetically identical to either parent
What is produced in sexual reproduction by the mother and father?
Gametes
What are Gametes?
Sperm cells and egg cells
Gametes are haploid. What does this mean?
They have half the number of chromosomes in a normal cell
How many chromosomes do gametes contain in humans?
23 - so the haploid number is 23
What happens at fertilisation?
A male gamete fuses with a female gamete to for, a zygote
What does the zygote end up with?
The full set of chromosomes
What happens to the zygote?
It undergoes cell division and develops into an embryo
How does an embryo inherit features from both parents?
It’s received a mixture of chromosomes from its mum and dad
What produced genetic variation in the offspring?
The idea that fertilisation of gametes is random
Definition of sexual reproduction?
Involves the fusion of male and female gametes. Because there are two parents, the offspring contain a mixture of their parents’ genes
