The law of independent assortment . a. states that the alleles at different loci

B) The first and second answers are correct.

Explanation:

The law of Independent assortment is one of the four laws of Mendel which states that alleles located on the chromosomes segregate or assort independently of each other.

This means that whether they are present close to each other or they are present at a distance they can be passed on in the generation together but they will show their effect on the phenotype independent of each other.

The law was concluded form the result of the dihybrid cross which showed that although the two genes were controlling the trait each allele will show its effect independent of each other or like a monohybrid result.

Thus, Option-B is the correct answer.

B

Explanation:

Alfred Hershey and Martha Chase in 1952 conducted an experiment to prove that the DNA was actually the carrier for hereditary material. Prior to that time,most scientist beloved that the DNA was just an inert molecule and that proteins carried the genetic information. In the experiment,In their experiments, Hershey and Chase showed that when bacteriophages, which are composed of DNA and protein, infect bacteria, their DNA enters the host bacterial cell, but most of their protein does not. Hershey and Chase and subsequent discoveries all served to prove that DNA is the hereditary material.