Cell division

Question 1

Where in the cell are the chromosomes found and what do they contain?

Answer 1

in the nucleus & they contain the genetic information/ DNA

Question 2

What is mitosis and can you describe what happens during this process?

Answer 2

mitosis is the process of cell division
during mitosis the chromosomes make copies of themselves
before the cell divides it makes copies of sub-cellular structures such as ribosomes and mitochondria
the set of chromosomes are pulled apart and the nucleus divides
the cytoplasm and cell membrane divides once to form 2 genetically identical daughters cells

Question 3

When does mitosis occur?

Answer 3

during growth,

Question 4

How many pairs of chromosomes do body cells have?

Answer 4

23 pairs of chromosomes

Question 5

How do gametes differ from body cells?

Answer 5

they only have half the number of chromosomes /a single set/only 23 single chromosomes

Question 6

What happens to gametes during fertilisation?

Answer 6

new cells is formed
the chromosomes from each gamete pair up
this cell divides by mitosis to form a baby