Chromosomes, Genes and DNA

Question 0

What are chromosomes

Answer 0

They are genes linked together in long strings

Question 1

What are genes

Answer 1

Genes are found in the cell nucleus and determine all the inherited characteristics of an organisms

Question 2

What is DNA

Answer 2

DNA is the chemical molecule that makes up the genes

Question 3

Where are chromosomes located

Answer 3

In the nucleus

Question 4

How many chromosomes are there and where do they come from

Answer 4

There are 46 chromosomes in the body 23 of which come from the mum and 23 come from the dad

Question 5

Where do the chromosomes come from in each parent

Answer 5

Female - egg cell

Male - sperm or pollen

Question 6

What are alleles

Answer 6

Genes in different forms

Question 7

What is DNA profiling

Answer 7

A way of analysing a DNA sample it is also known as genetic profiling

Question 8

What is DNA profiling used for

Answer 8

Investigating crime
Paternity testing
Identification of victims
Comparing the DNA of different organisms

Question 9

What are the disadvantages of DNA analysis

Answer 9

During police investigations DNA samples may be taken and kept on record for some time

DNA sequencing may discover a disorder which is not yet obvious or likelihood of some sort of health problem

It may be found that a person is more likely than average to suffer from a particular condition in the future of wrong it causing the person stress