In a global sense, ALL nutrient cycles are coupled together
Indicate whether the statement is true or false.
Answer: TRUE
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In four-o'clock plants, red flower color is dominant to white flower color. However, heterozygous plants have a pink color. If a pink-flowered plant is crossed with a white-flowered plant, what will be the phenotypic ratios of their offspring?
A. ¼ red, ½ pink, ¼ white B. All pink C. All white D. ½ pink, ½ white E. ½ red, ½ pink
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. When researchers designed this experiment, they wrote "If chemical X is toxic, the fish will begin to look sick and die." This statement is a(n) ____.
a. interpretation b. theory c. hypothesis d. result e. prediction
Three types of cytoskeleton are ___, ___ and ___
Fill in the blank(s) with the appropriate word(s).
Genetic diversity arises as a consequence of ________, which produce(s) different alleles of a gene.
A. crossing over B. chromosome segregation C. gene swapping D. gene splicing E. mutations