Flowers, fruits, and endosperm are defining characteristics of the angiosperms.
Answer the following statement true (T) or false (F)
True
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In humans, the sickle-cell trait is caused by a single defective allele, but sickle-cell disease only occurs in individuals that are homozygous for the sickle-cell allele. A man and woman each carry the trait, but do not have sickle-cell disease. What is the probability that their first two children will both have sickle-cell disease?
A. 1/16 B. 1/8 C. 1/4 D. 3/8 E. 1/2 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 monohybrid crosses? About determining the probability of two independent events? 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?
Earth's early atmosphere contained (select all that apply):
A. methane. B. water. C. nitrogen. D. hydrogen. E. organic molecules.
In the Calvin-Benson cycle of photosynthesis,
after carbon dioxide is fixed into a six carbon molecule, what molecule is generated in the cycle next?
a. RuBP b. glucose c. PGA d. ATP e. NADPH
All virus particles (virions) have a
A. A genome surrounded by proteins B. Ribosomes and nuclei C. A genome surrounded by cytoplasm but no organelles D. Nuclei and mitochondria E. Golgi and a genome