What is the term for a cell with two sets of chromosomes?

• A. Diploid
• B. Haploid
• C. Heterozygous
• D. Aneuploid

Answer: (A)

The term for a cell with two sets of chromosomes is "diploid." In diploid organisms, including humans, cells typically contain two complete sets of chromosomes, one inherited from each parent. This arrangement allows for genetic diversity through sexual reproduction, where gametes (egg and sperm cells) are produced that have only one set of chromosomes, or are haploid. When these gametes merge during fertilization, they restore the diploid status in the resulting zygote.

Understanding this concept is essential in various biological processes, such as meiosis and mitosis. In meiosis, diploid cells undergo division to produce haploid gametes, ensuring that each generation maintains the correct chromosome number. Therefore, recognizing diploidy is crucial in genetics and in understanding how traits are inherited through generations.