When studying phenotypic variations due to the environment, it is necessary to compare organisms with identical genotypes. In addition, it is necessary to use identical environments when studying variation in genotypes
A. true
B. false
A
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The pH of the inner thylakoid space has been measured, as have the pH of the stroma and of the cytosol of a particular plant cell. Which, if any, relationship would you expect to find?
A) The pH within the thylakoid is less than that of the stroma. B) The pH of the stroma is lower than that of the other two measurements. C) The pH of the stroma is higher than that of the thylakoid space but lower than that of the cytosol. D) The pH of the thylakoid space is higher than anywhere else in the cell. E) There is no consistent relationship.
The heart is a(n) ________ composed mainly of ________ tissue?
A. tissue, cardiac B. organ, muscle C. tissue, connective D. organ, connective E. organ, epithelial
Viruses are not filterable.
Answer the following statement true (T) or false (F)
Which of the following supports the accuracy of the Punnett square?
a. law of segregation b. law of dominance c. law of dependent assortment d. law of incomplete dominance