How many Barr bodies does a normal human female contain in each diploid cell?

A. 0
B. 1
C. 2
D. 3


Answer: B

Biology & Microbiology

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Bulimia nervosa is a disorder that involves:

(a) paranoia (b) psychosis (c) excessive anxiety in social situations (d) bingeing and purging

Biology & Microbiology

define muscle dysmorphia

What will be an ideal response?

Biology & Microbiology

Four nucleic acid samples are analyzed to determine the percentages of the nucleotides they contain. Which of the following DNA sample(s) could be double-stranded DNA?

Sample 1: A(22%), G(28%), T(22%), U(0%), C(28%); Sample 2: A(30%), G(30%), T(0%), U(20%), C(20%); Sample 3: A(18%), G(32%), T(0%), U(18%), C(32%); Sample 4: A(29%), G(29%), T(21%), U(0%), C(21%) a. Sample 1 b. Samples 1 and 2 c. Samples 1 and 4 d. Samples 2 and 3 e. Samples 3 and 4

Biology & Microbiology

The Earth completes one rotation about its axis every

A. 1 month. B. 1 year. C. 1 day. D. 12 hours.

Biology & Microbiology