25. If there are 12 chromosomes in an animal cell in interphase of the cell cycle, what is the diploid number of chromosomes for this organism?
A) 6
B) 24
C) 36
D) 12
E) 48
The diploid number of chromosomes represents the total number of chromosomes in a cell, including both sets of chromosomes. In this case, since we know that there are 12 chromosomes in an animal cell in interphase, we can assume that this is the haploid number of chromosomes.
Therefore, to find the diploid number, we need to multiply the haploid number by 2.
12 (haploid number) x 2 = 24
Therefore, the diploid number of chromosomes for this organism is 24.
The correct answer is option B) 24.
To determine the diploid number of chromosomes for this organism, we need to understand the concept of the cell cycle and the different phases it consists of.
During interphase, a cell prepares for cell division by undergoing various processes such as DNA replication. At this stage, the chromosomes are in their uncondensed, thread-like form, called chromatin.
The diploid number of chromosomes refers to the total number of chromosomes that an organism has in its somatic cells (cells other than reproductive cells). In animals, the diploid number is usually represented as 2n.
Given that there are 12 chromosomes in an animal cell in the interphase, we can determine the diploid number by multiplying this number by 2 since the diploid number represents the total number of chromosomes in the organism.
Thus, the diploid number would be 2 * 12 chromosomes, which equals 24 chromosomes.
Therefore, the correct answer is B) 24