Some viruses consist only of a protein coat surrounding a nucleic acid core. if you wanted to radioactively label the nucleic acids separately from the protein, you would use radioactive

Phosphorous

Explanation:

Phosphorous can be used to label Nucleic acid. Nucleic acids can be modified or labelled using tags .

Some common materials or substances that can be used to label nucleic acids are flurophore, enzymes, radioactive phosphorous, biotin et cetera.

The nucleic acid of virus is labelled using phosphorous. When this virus will infect the host cell then nucleic acids will be seen separately.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.