Final answer:
The statement presented is false. An organism's diploid number is twice its haploid number. Therefore, if the haploid number is 6, the diploid number would be 12, not 3.
Step-by-step explanation:
The statement 'If an organism's haploid number is 6, its diploid number is 3' is false. The haploid number (n) represents the number of chromosomes in a gamete (sex cell), which is a single set of chromosomes. The diploid number (2n) is the total number of chromosomes present in a somatic cell, which includes both sets of chromosomes from each parent, resulting in two copies of each chromosome. For an organism with a haploid number of 6, its diploid number would be twice that amount, so the correct diploid number is 12. This basic principle of biology is seen during meiosis, where a cell with a diploid number undergoes division to produce haploid gametes. In summary, the diploid number is always twice the haploid number in organisms that undergo sexual reproduction, such as most animals and plants.
Review question 1 highlights that a diploid cell has twice the number of chromosomes as a haploid cell. Additionally, from the example given where an animal cell with a diploid number of four undergoes meiosis, it forms four haploid daughter cells, hence solidifying the understanding that the diploid number is double the haploid number. Lastly, a diploid organism, such as humans, has 46 chromosomes in somatic cells and 23 chromosomes in gametes. If gametogenesis does not precisely halve the chromosome number to form haploid cells, it can lead to aneuploidy, an error in chromosome number.