At about what point in gestation can an ultrasound exam determine the sex of the fetus?

A) about 4 weeks after fertilization
B) at the end of the first trimester
C) about 20 weeks after fertilization
D) at the end of the second trimester


B

Biology & Microbiology

You might also like to view...

Which of these diseases would most likely be identified by viewing a stained blood smear in a light microscope?

A. Ebola hemorrhagic fever B. Dengue fever C. HIV D. Chagas disease

Biology & Microbiology

In the classic argument of ‘nature vs. nurture’,

nature would most correspond with:a. genes. b. environment. c. divine intervention. d. environment and genes. e. genes, environment, and genes

Biology & Microbiology

When speciation occurs, the result is usually a dramatic change in appearance in the new species

Indicate whether the statement is true or false

Biology & Microbiology

Why is nitrogen necessary in the human body?

What will be an ideal response?

Biology & Microbiology