Observe the following image of a chromosome. It has two dominant genes A and B located as depicted. What will be the correct gene placement at position i and ii?

Question

Observe the following image of a chromosome. It has two dominant genes A and B located as depicted. What will be the correct gene placement at position i and ii? <img class="img-fluid question-image" alt="Question" src="https://cdn.tardigrade.in/q/nta/b-m9yqi3ujfbreo3en.jpg" /> (A) i: A and ii: B (B) i: B and ii: A (C) ii: a and i: b (D) i: either A or a and ii: either B or b

Tardigrade Admin · Accepted Answer

The given diagram depicts one chromosome with two chromatids. These two chromatids are called sister chromatids. Sister chromatids are identical in their alleles. Homologous chromosomes may have different alleles for the same gene.

Q. Observe the following image of a chromosome. It has two dominant genes A and B located as depicted. What will be the correct gene placement at position i and ii?

i: A and ii: B

i: B and ii: A

ii: a and i: b

i: either A or a and ii: either B or b

The given diagram depicts one chromosome with two chromatids. These two chromatids are called sister chromatids. Sister chromatids are identical in their alleles. Homologous chromosomes may have different alleles for the same gene.