Q: Polygenic traits result in a distribution that resembles a curve. what is the shape of the curve? Choices: - W-shaped - J-shaped - egg-shaped - bell-shaped A:
bell-shaped

Q: The job of the nucleolus is to build what? Choices: - chromosomes - electrons - cells - ribosomes A:
ribosomes

Q: Q: In humans, what period lasts from the ninth week of development until birth? Choices: - third trimester - plasma period - development period - fetal period A:
A: fetal period

Question: Q: In combination or synthesis reactions, two chemical species combine to produce a what? Choices: - fusion - mixture - alloy - new compound A:
Answer: new compound

*Question*
Q: On insects, what are the openings on the sides of the abdomen that allows respiration to occur? Choices: - gills - wings - chloroplasts - spiracles A:
**Answer**
spiracles

(Q).
Q: What type of competition occurs between members of the same species? Choices: - exospecies - interspecies - interspecific - intraspecific A:
(A).
intraspecific