Which statement about the reproductive system of human females is true?
A) Eggs develop within the uterus.
B) The corpus luteum secretes progesterone, which helps maintain the uterine lining during pregnancy.
C) After 9 months of development, an embryo is called a fetus.
D) The cervix is an important structure of sexual arousal.
Answer: B
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What are 2 reasons why tropical environments are potentially less vulnerable to the effects of oil pollution than higher latitude areas?
What will be an ideal response?
Inflowing river waters most often impoverish rather than fertilize estuaries
Indicate whether the statement is true or false
Which of the following statements about the nucleus is not true?
A. The nucleus usually contains a nucleolus region which is where ribosome assembly begins B. The nucleus is the site of protein assembly C. The nucleus stores the coded instructions for making the cell's proteins D. The nucleus is surrounded by a nuclear envelope that lets materials in and out
Blue flower color (B allele) is dominant to white (b allele). If a population of plants in Hardy-Weinberg equilibrium contains white flowers (bb) at a frequency of 0.04, what is the frequency of the blue flower allele (B)?
A. 0.64 or 64% B. 0.2 or 20% C. 0.8 or 80% D. 0.96 or 96% E. 0.32 or 32%