The ___ model of human origins is supported
by genetic studies.
a. replacement
b. multiregional
c. transitional
d. relational
e. allopatric
A
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Which one of the following types of sequence can be found in a genome?
A. regulatory elements of protein-coding genes B. noncoding introns C. protein-coding exons D. coding sequence for RNAs E. All of the answer options are correct.
Within the typical sexual reproduction of green algae, the genetic composition of the sporophyte form of the protist is
A. limited to the DNA found within the chloroplasts, because the sporophyte is a dormant form of the protist. B. 1n, or haploid, because the sporophyte follows meiosis. C. 2n, or diploid, because the sporophyte follows fertilization, growing and differentiating through numerous cell cycles. D. None of the answer choices is correct. E. reproduced through mitosis, after the zygote single cell has formed.
Calcitonin works synergistically to parathyroid hormone. Indicate whether the statement is true or false
When considering the biomass of a photosynthetic organism for energy transfer studies, which of the following best explains why it is necessary to use the dry mass rather than the wet mass to determine productivity?
(A) The wet mass can vary widely due to differing concentrations of minerals in soil (B) The mass that is produced and added to the organism does not include the mass of water (C) Water has no caloric value (D) Water plays no role in primary productivity