Which of these statements can be used to described a chromosome?

Everyone knows about the human DNA and law of inheritance among these Chromosomes are thread like structures in thee Nucleus where DNA molecules are packed.

chromosomes are the building blocks of the human body as it is further divided into centro-mere which are also its arms. the shorter is S arm and the longer is its Q arm. the centro-mere being located in the structure gives it a specific shape.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.