Question

Join properly Column-I and Column-II.

Column-I	Column-II
(a) Henking	$\left(1\right)$ Study of chromosomes in plants
(b) Bridges	$\left(2\right)$ Environmental effect of sex determination
(c) Baltzer	$\left(3\right)$ X-body
(d) Allen	$\left(4\right)$ Law of genetic balance

• A. a-$4$, b-$3$, c-$2$, d-$1$
• B. a-$3$, b-$2$, c-$4$, d-$1$
• C. a-$3$, b-$4$, c-$2$, d-$1$
• D. a-$1$, b-$2$, c-$3$, d-$4$

Answer 1

Answer: (C)

a-$3$, b-$4$, c-$2$, d-$1$

Henking discovered X body in fireflies

Calvin Bridges gave a law of genetic balance which states that instead of XY chromosomes, sex is determined by the genic balance or ratio between X chromosome and autosome genomes.

Baltzer showed that the sex of echiuroid worm Bonellia viridis depended on where the Bonellia larva settled. so it shows the environmental effect of sex determination.

Allen studied chromosomes in plants.

So the correct answer is (C)