Use the Following Information When Answering the Corresponding Question(s)

question 28

Multiple Choice

Use the following information when answering the corresponding question(s) .
In 1668 Francesco Redi did a series of experiments on spontaneous generation.He began by putting similar pieces of meat into eight identical jars.Four jars were left open to the air,and four were sealed.He then did the same experiment with one variation: Instead of sealing four of the jars completely,he covered them with gauze (the gauze will exclude the flies while allowing the meat to be exposed to air) .In both experiments,he monitored the jars and recorded whether or not maggots (young flies) appeared in the meat.
-Refer to the paragraph on Redi's experiments.What hypothesis was being tested in the initial experiment with open versus sealed jars?

• A)Spontaneous generation is more likely during the long days of summer.
• B)The type of meat used affects the likelihood of spontaneous generation.
• C)Maggots do not arise spontaneously,but from eggs laid by adult flies.
• D)Spontaneous generation can occur only if meat is surrounded by air.

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Definitions:

Chorionic Villus Sampling

A prenatal test where samples of the placental tissue are taken for genetic testing to check for abnormalities in the fetus.

Alpha-Fetoprotein Assay

A blood test used to measure the levels of alpha-fetoprotein, which can help assess the risk of developmental defects in a fetus.

Neural Tube Defects

A type of birth defect of the brain, spine, or spinal cord that occurs when the neural tube does not close completely.

Sex Chromosome

The chromosomes that determine the sex of an organism, typically represented as XX for females and XY for males in humans.