In the synthesis of amino acids, the addition of the amino nitrogen usually occurs ________ the synthesis of the carbon skeletons.
A. after
B. during
C. before
Answer: A
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In watermelons, the gene for green color is dominant over its allele for striped color. At another gene locus, the gene for short shape is dominant over its allele for long shape. These two allele pairs assort independently. If a plant with long, striped fruit is crossed with a plant that is heterozygous for both of these traits, what percentage of the offspring do you expect will be short and green? ( Enter the number only without the percent sign. For example, enter 100% as 100 and enter 12.5% as 12.5 )
What will be an ideal response? Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about two-gene crosses and independent assortment? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Codons that serve as "stop" signals for translation are recognized by
A. tRNA. B. release factors. C. anticodons. D. translation terminators. E. aminoacyl-tRNA synthetases
Competition has been regarded as a major force behind species divergence and specialization
Indicate whether the statement is true or false
Hereditary material in organisms is
a. DNA b. ATP c. RNA d. chromosomes