AP BIOLOGY

Detailed explanation-1: -Explanation: Fruit fly has 3 pairs of autosomal chromosomes and one pair of sex chromosomes, making total 4 pairs (8 chromosomes).

Detailed explanation-2: -If the chromosome number of a cell at the metaphase I stage is 8, then it signifies that the organism’s diploid chromosomal number is 8. This animal cell will have a total of 8 homologous pairs of chromosomal strands.

Detailed explanation-3: -Chromosome Number A body cell in an adult fruit fly has 8 chromosomes: 4 from the fruit fly’s male parent, and 4 from its female parent. These sets of chromosomes are homologous.

Detailed explanation-4: -Fruit flies are easy to study because they have only four pairs of chromosomes (2n = 8). Finally, the third instar larva, the largest larva, has giant “polytene” chromo-somes that can be easily stained and studied.

Detailed explanation-5: -The somatic cells of fruit flies contain eight chromosomes, which means they have two sets of four chromosomes. Meiosis is the process by which sex cells are produced. Sex cells are haploid, which means they have one set of chromosomes. The sex cells of fruit flies contain one set of four chromosomes.