The ________ pathway is important in early nonspecific responses to infection because it occurs in the absence of antibodies.
A) cell-mediated
B) alternative
C) clonal selection
D) classic
E) humoral
Ans: B) alternative
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________ is to transcription as ________ are to translation?
A. RNA splicesome; ribosomes B. RNA polymerase; ribosomes C. RNA polymerase; RNA splicesomes D. DNA polymerase; RNA polymerase E. DNA polymerase; ribosomes
In a population of 400 salamanders, some individuals have long toes and others have short toes. This phenotypic difference is due to a single gene with dominant and recessive alleles, T and t, where T confers long toes. If the toe length gene is in Hardy Weinberg equilibrium, and 256 individuals have short toes, how many individuals are heterozygous at the toe length locus?
A) More information is needed to determine the answer. B) 32 C) 128 D) 144
The best way to prevent desertification is to avoid farming in areas that are subject to __________. Fill in the blank(s) with the appropriate word(s)
Roots that arise from branches or vertical stems, and that are used to support a plant in an upright position, are referred
to as: a. prop roots. b. contractile roots. c. pneumatophores. d. lateral roots. e. tap roots.