Question

Alleles are:

• A. Alternate forms of a gene
• B. Homologous chromosome
• C. Pair of sex chromosome
• D. None of the above

Answer 1

The correct option is A

Alternate forms of a gene

The correct option is A:

Explanation of the correct option:

1. The alternative forms of a gene is called alleles.
2. The allele can be dominant or recessive.
3. These genes are units of inheritance that encode a specific trait in an organism.

Explanation of incorrect options:

Option B:

1. Homologous chromosomes are pairs of chromosomes that contain a maternal and a paternal chromatid that is similar in length and gene position and are joined at the centromere.
2. The position of the genes on each homologous chromosome is the same, but they can contain different alleles of the genes.

Option C:

1. Sex chromosomes are a pair of chromosomes that determine a person's sex.
2. Either XX sex chromosomes in females or XY in males are the sex chromosomes in humans.

Final answer: Alleles are alternate forms of a gene.