4.6.1 reproduction Flashcards
Sexual reproduction involves?
the joining (fusion) of male and female
gametes
in animals
sperm and egg cells
in plants
pollen and egg cells
what is there in sexual reproduction and what does it lead to?
In sexual reproduction there is mixing of genetic information which
leads to variety in the offspring
The formation of gametes involves?
gametes
Asexual reproduction involves
only one parent and no fusion of
gametes
in asexual reproduction, there is no mixing of genetic information. what does this lead to?
This leads to
genetically identical offspring (clones).Only mitosis is involved.
meiosis ?
halves the number
of chromosomes in gametes
fertilisation?
restores the full
number of chromosomes.
Cells in reproductive organs divide by?
meiosis to form gametes.
When a cell divides to form gametes:
copies of the genetic information are made
* the cell divides twice to form four gametes, each with a single
set of chromosomes
all gametes are?
genetically different from each other
Gametes join at fertilisation to?and the new cell divides by?
restore the normal number of
chromosomes.
The new cell divides by mitosis.The number of cells
increases
As the embryo develops?
cells differentiate
The genetic material in the nucleus of a cell is composed of
a chemical called DNA