An individual who is a carrier of a genetically inherited disease ____
a. has the disease, and all of their offspring will have the disease
b. does not have the disease but must have a parent with the disease
c. does not have the disease but may have offspring with the disease
d. has the disease and must have a parent with the disease
e. does not have the disease but must have a parent with the disease and may have offspring with the disease
ANSWER: c
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In eukaryotic organisms, the processing of the 45S rRNA into 5.8S, 18S, and 28S rRNA occurs where?
A. In the cytoplasm B. In the nucleolus C. In the endoplasmic reticulum D. In the Golgi body E. Throughout the cell
Some Drosophila reject the sperm of another species, which is known as
a. gametic isolation. b. hybrid breakdown. c. hybrid inviability. d. mechanical isolation. e. temporal isolation.
Which of the following statements is true?
a. Arteries carry only oxygenated blood. b. The systemic circuit leaves the heart from the left ventricle. c. Blood passes through only one capillary bed on its trip through the systemic circuit. d. Platelets survive a longer time than erythrocytes. e. The heart is able to pick up the oxygen it needs as the blood flows through it.
The experiment of Francesco Redi (1626–1697) illustrated in the figure above addressed the question of whether flies spontaneously generated from meat carcasses. Choose the correct matching of experimental set up and result
a. Meat in jars with an open lid developed maggots. b. Meat in lidded jars did not develop maggots. c. Meat left in jars with mesh covered lids developed maggots. d. B and C, but not A.