Multiple choice

Alleles are

  1. alternate forms of gene

  2. homologous chromosomes

  3. pairs of sex chromosomes

  4. Both (1) and (2)

  5. None of the above

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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