Question

you are studying a diploid organism that has 14 pairs of chromosomes. how many chromatids will a gamete from this organism have? multiple choice 112 56 14 7 28

Explanation:

Step1: Determine diploid chromosome number

The organism has 14 pairs of chromosomes, so the diploid number ($2n$) is $14\times2 = 28$ chromosomes.

Step2: Recall gamete formation

Gametes are haploid cells formed by meiosis. In meiosis, the chromosome number is halved. So a gamete has $n$ chromosomes. Here, $n = 14$ chromosomes.

Step3: Know chromatid - chromosome relationship in gametes

After DNA replication in the parent cell before meiosis, each chromosome consists of two sister - chromatids. But after meiosis, each chromosome in a gamete is a single - chromatid chromosome (after the sister - chromatids separate during meiosis II). So the number of chromatids in a gamete is equal to the number of chromosomes in the gamete.

Answer:

14