Question

Using the example of the worm, fly, and human genomes please answer: Is there a correlation between genome and intron sizes?

Yes, negative correlation: genomes that contain shorter average introns are generally bigger

Yes, positive correlation: genomes that contain shorter average introns are generally smaller

No, no correlation: genomes may be of the same size, but average introns differ in size

No, no correlation: average introns may stay of the same size, but genome sizes vary significantly

Answer 1

Q) Using the example of the worm, fly, and human genomes please answer: Is there a correlation between genome and intron sizes?

Ans : Option 2

Yes, positive correlation: genomes that contain shorter average introns are generally smaller.

Reason : Introns are non-coding sequence that do not code for proteins. The difference in the sizes of worm, fly and human genomes reflects amounts of non-coding DNA present in different organisms . The presence of large amounts of noncoding sequences is a general property of the genomes of complex eukaryotes. In humans 99% of dna is non-coding whereas in worms it is 98.8% and in flies 40% of dna are introns(non-coding sequence). Hence the genomes that contain shorter average introns are generally smaller and genomes that contain larger average introns are generally bigger.