In mice, muscle cells contain 40 chromosomes - HSC - SSCE Biology - Question 8 - 2022 - Paper 1
Question 8
In mice, muscle cells contain 40 chromosomes.
Which of the following is a correct statement about mouse cells?
A. The gametes contain 20 pairs of chromosomes.
B. ... show full transcript
Worked Solution & Example Answer:In mice, muscle cells contain 40 chromosomes - HSC - SSCE Biology - Question 8 - 2022 - Paper 1
Step 1
A. The gametes contain 20 pairs of chromosomes.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is correct. Since mice have 40 chromosomes in their somatic (body) cells, their gametes, which are formed by meiosis, will contain half the number of chromosomes. Therefore, the gametes will have 20 chromosomes, or 20 pairs since pairs of chromosomes are referenced.
Step 2
B. The somatic cells contain 20 pairs of chromosomes.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is incorrect. As specified, muscle cells, which are somatic cells, contain 40 chromosomes, or 20 pairs of chromosomes, making this statement inaccurate.
Step 3
C. The cells produced by meiosis contain 40 chromosomes.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is incorrect. Meiosis produces gametes with half the number of chromosomes. Therefore, the cells produced by meiosis will have only 20 chromosomes, not 40.
Step 4
D. The cells produced by mitosis contain 40 pairs of chromosomes.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement is incorrect. Mitosis results in daughter cells that have the same number of chromosomes as the parent cell. In this case, muscle cells have 40 chromosomes or 20 pairs, so saying 40 pairs is incorrect because it should be stated as 40 chromosomes total.
