Reproduction Flashcards
What does sexual reproduction produce?
Genetically different cells
What is sexual reproduction?
Genetic information from 2 organisms (mother and father) is combined to produce offspring
What are the offspring which are produced from sexual reproduction?
Genetically different to either parent
What do the mother and father produce?
Gametes
How many chromosomes do each gametes have?
23
Half the number in a normal cell
What is fertilisation?
The egg and the sperm cell fuse together to form a cell with a full number of chromosomes
What does sexual reproduction involve?
The fusion of male and female gametes
What does the mixture of genetic material produce?
Variation in the offspring
What does asexual reproduction produce?
Genetically identical cells
What is asexual reproduction?
An ordinary cell can make a new cell by diving into 2
When a cell divides into 2 for asexual reproduction what does the new cell contain?
Exactly the same genetic information
How many parents are involved in asexual reproduction?
One
How does asexual reproduction work?
X-shaped chromosomes have 2 identical halves
They split down the middle
This forms 2 sets of half chromosomes
DNA replicates itself to form 2 identical cells with complete chromosomes
How do plants and animals use asexual reproduction?
To grow and produce replacement cells
What organisms produce offspring using asexual reproduction?
Bacteria
Certain plants
