Question

while human body cells have 46 chromosomes, fruit fly body cells contain 8 chromosomes and fruit fly gametes contain 4 chromsomes. to demonstrate your understanding of chromosome number,s please apply your knowledge to fill out this chart for fruit fly cells. you will need to (1) illustrate the number of chromosomesi n each fruit fly cell and (2) write the number of chromosomes and chromatids in each fruity fly cell on all of the blank lines. Notice: Mitosis is on the left and meiosis is on the right

Answer 1

Step-by-step explanation:

Fruit fly body cells contain 8 chromosomes and fruit fly gametes contain 4 chromsomes.

Diploid number of chromosomes in body cells of fruitfly is 2n = 8

Haploid number of chromosomes in gametes of fruitfly is n = 4

Before DNA replication Before Mitosis After mitosis

(DNA replication)

Illustration 2n = 8 XX XX II II II ii

II II II ii XX xx II II II ii

number of

chromosomes 4 4 4

number of

chromatids 8 16 8 chromatids each

in two daughter cells

Before DNA replication Before Meiosis Meiosis I Meiosis II

(DNA replication)

Illustration 2n = 8 (XX XX X X X x IIIi IIIi

II II II ii XX xx ) X X X x IIIi IIIi

number of

chromosomes 4 4 4 each in 2 4 each in 4

daughter cells daughter cells

number of

chromatids 8 16 8 each in 2 4 each in 4

daughter cells daughter cells