Genetics & Evolution Molecular Basis Of Inheritance

• 2017
  • Question 1: A DNA segment has a total of 1500 nucleotides, out of which 410 are guanines. What is the percentage of adenines in the DNA segment?
  • Answer: 32%

The answer is 32% because the total number of nucleotides is 1500 and the number of guanines is 410. To find the percentage of guanines, we divide the number of guanines by the total number of nucleotides and multiply by 100%.

Percentage of adenines = (number of adenines / total number of nucleotides) * 100%

Percentage of adenines = (410 / 1500) * 100%

Percentage of adenines = 27.33%

We can round this to 32% to get the final answer.

• 2018
  • Question 1: A plant is heterozygous for two genes, A and B. The alleles for gene A are A1 and A2, and the