Variation, genes, chromosomes and DNA Flashcards
1
Q
What does the nucleus in cells do?
A
Controls the cell-it is genetic material.
2
Q
How many chromosomes do all cells in the body have?
A
46➡️23 from your mum + 23 from your dad
3
Q
What chromosomes do?
A
Pass off to offspring.
4
Q
What are chromosome made up of?
A
Genes, and genes are made of DNA.
5
Q
If chromosome are black in pictures, what does this mean?
A
There are lots of genes.
6
Q
How many genes are spread around 46 chromosomes?
A
Roughly 23,000
7
Q
Why are genes in pairs?
A
As there is 1 gene from your mum and 1 gene from your dad.
8
Q
How many chromosome do sex cells?
A
23
9
Q
What is an allele?
A
A different variety of the same gene.
10
Q
What letter sex cell do men and women produce
A
Women➡️X
Men➡️Y
11
Q
List from smallest to largest of the structures of cell, nucleus, chromosome & gene
A
- gene
- chromosome
- nucleus
- cell
