Genes can be best defined as: A. the traits expressed by the organism

B. the DNA that make up a chromosome

C. a form of reproduction

D. section of DNA that codes for a specific trait

D. section of DNA that codes for a specific trait

Explanation:

Genes are sections of the DNA that codes for a specific trait. They are simply defined as the basic physical and functional unit of hereditary.

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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