Which disorder is caused in man due to presence of one extra sex chromosome ?

Whichdisorder is caused in man due to presence of an extra chromosome number 21?

What would be the disorder caused due to presence of extra autosomal chromosome ?

Which disease is caused due to deficiency of iron in the body?

Which disease is caused due to hole in the ozone layer and why?

Name the disorder caused due to rise in level of cholestrol in the body.

Tomatoes, carrots and chillies are red in colour due to the presence of one pigment. Name the pigment. Is it a photosynthetic pigment?

How does gain or loss of chromosome (s) take place in humans? Describe one example each of chromosomal disorder along with the symptoms involving an autosome and a sex chromosome.

Give an example of human disorder that is caused due to a single gene mutation.