Which of the following refers to a paired cross in which the respective traits of the male and female in one cross become the respective traits of the female and male in the other cross?
a. reciprocal cross
b. test cross
c. dihybrid cross
d. monohybrid cross
a. reciprocal cross
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With the advent of tools to incorporate molecular data, phylogenetic analysis can be used to:
A. reconstruct the evolutionary history of a group of organisms over millions of years. B. track the spread of a pathogen, such as a fungus or virus, from place to place. C. identify the origin of invasive pest species. D. track shipments of endangered species or their products (such as elephant ivory or bushmeat). E. All of the answer options are correct.
Host defense mechanisms—ways in which the body protects itself from pathogens—can be thought of as an army consisting of how many lines of defense?
A) 2 B) 3 C) 4 D) 5
Which of the following factors is most important in
determining the type of biomes found in a particular region? a. soil type b. light intensity c. temperature d. type of animals in the region e. wind patterns
The tick-rhino relationship is an example of ________
A) parasitism B) mutualism C) predator-prey D) commensalism