What is senescene?

mate i want the answer related to biology..

Nucleic acid certain protein cell membranes certain carbohydrates

In pea plants, the allele for inflated pod seed, i, is dominant over the allele for constricted pod seed, i. the punnett square shows a cross for this trait. which offspring will be homozygous dominant

In the practice of science, this type of reasoning is used to develop explanations.