Genes chromosomes and allelles2

Question 1

1) What do the bandings on a chromosomes represent

Answer 1

The bandings represent the genes

Question 2

2) How many genes do humans have

Answer 2

Humans have roughly 23,000 to 24,000 genes

Question 3

3) What is an allele

Answer 3

An allele is a different version of a gene

Question 4

4) How many chromosomes do most cells have

Answer 4

Most cells have 23 pairs of chromosomes, for a total of 46

Question 5

5) Why are the chromosomes referred to as being in pairs

Answer 5

Because each one comes from your mum and your dad

Question 6

6) What is the code for a male

Answer 6

XY

Question 7

7) What is the code for a female

Answer 7

XX

Question 8

8) Where are the chromosomes found

Answer 8

The chromosomes are found in the nucleus

Question 9

9) Put the following in size order

Gene, Chromosomes, Nucleus, DNA

Answer 9

Nucleus, chromosomes, gene, DNA

Question 10

10) Use those terms to explain how genetic material is organised.

Answer 10

. Firstly the nucleus which is the biggest and then there is the chromosomes which have 23 pairs each. On the chromosomes there are the genes which have 23,000 to 24,000 of them and then there is the DNA and there are roughly 3billion of them.