Question

1. what is the basic unit of heredity?
2. Define Allele.
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Answer 1

Answer:

1.A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins

Answer 2

Answer:

1.genes

2.Each of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.

An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent.