A mammal is _____ and has a body temperature _____.
What will be an ideal response?
endothermic; maintained by its own metabolism
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Below is a pedigree of a human genetic disease in which solid color indicates affected individuals. Assume that the disease is caused by a gene that can have the alleles A or a. What is/are the possible genotype(s) of person 2?
A) AA
B) Aa
C) Either AA or Aa
D) aa
E) Cannot be determined
On both the eastern and western coasts of the USA, the subtidal zone contains very productive
a. seagrass meadows. b. Laminaria seaweeds. c. Ulva flats. d. both a and b e. both b and c
In addition to the capsid, some viruses also have which of the following?
a. a virion b. a cell wall c. a viral envelope d. a plasma membrane
The chromosomes we typically see in images are isolated from mitotic cells. These mitotic chromosomes are in the most highly condensed form. Interphase cells contain chromosomes that are less densely packed and __________________________
(a) occupy discrete territories in the nucleus. (b) share the same nuclear territory as their homolog. (c) are restricted to the nucleolus. (d) are completely tangled with other chromosomes.