Scientists want to determine whether chemical X, a component of fertilizer, is harmful to fish. They treat fish in the

laboratory with increasing amounts of the chemical for one week and then measure their viability. Fish that are not treated
with chemical X are considered ____.



a. experimental data
b. controls
c. replicates
d. experimental variables
e. the null hypothesis


b

Biology & Microbiology

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If a diploid cell has 12 chromosome pairs, how many different combinations of chromosomes are possible in gametes after meiosis?

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Iron meteorites are rare to observe as meteoroids near Earth

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What is the difference between PubMed and OMIM?

What will be an ideal response?

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