3. Katelyn is working on a project about classifying cells as either prokaryotic or eukaryotic. She is observing a cell under an electron microscope that does not have a cell wall but does have a nucleus. How should Katelyn classify this cell? A prokaryotic

B eukaryotic

C there is not enough information to classify this cell

D this cell has components of both types of cell
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Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

What is a sex-linked genetic disorder that disrupts the blood's ability to clot? a.achondroplasia b.huntington's disease c.hemophilia d.albinism

What molecule does hemoglobin decay into over time