Mitosis and Meiosis Flashcards
(12 cards)
Name the 2 types of reproduction.
Sexual and Asexual
What is mitosis?
the process that produces genetically identical daughter cells. These cells are diploid.
What is meiosis?
The process that produces haploid gametes which are not genetically identical. These cells are haploid.
What is mitosis used for?
growth, repair and Asexual reproduction.
What is meiosis used for?
to produce gametes for sexual reproduction.
Give 3 differences between sexual and asexual reproduction.
. Sexual reproduction requires 2 parent cells whereas asexual reproduction only requires 1 parent cell.
. Sexual reproduction makes genetically different offspring and asexual reproduction makes genetically same offspring.
. Fertilisation only happens in Sexual reproduction and not in asexual.
What are 3 examples of asexual reproduction that we have looked at?
- Runners- a new plant is produced where the runner touches the ground.
- Tubers- swollen underground stems containing lots of stored food. one plant can produce many tubers through asexual reproduction. each of these tubers will form new plants.
- Bulbs- underground buds with thick fleshy leaves containing stored food. A main shoot will grow out of the parent bulb and another will grow out of the side “daughter” bulb.
list the features of meiosis.
- formation of gametes
- sex cells only
- not genetically identical
- 2 divisions
- 4 daughter cells
- haploid ( half the number of chromosomes)
- only sex organs
list all the features of mitosis.
- growth and repair
- all cells except sex cells
- genetically identical daughter cells
- one division
- 2 daughter cells
- diploid ( full number of chromosomes)
- occurs throughout body and the plant.
How many chromosomes will a normal human body cell have and what is it called?
It would be called a diploid cell and it has 46 pairs of chromosomes.
How many chromosomes will a gamete have and what s this called?
It would be called a haploid cell and it has 23 pairs of chromosomes.
