#Question id: 3265
#SCPH28 | Zoology
If the curve shifts to the left or to the right, there is no gene flow, and the population size consequently increases over successive generations, then which of these is (are) probably occurring?
#Question id: 8924
#SCPH28 | Zoology
#Question id: 15817
#SCPH12 I Genetics
You and your lab partner have isolated 20 new mutant yeast strains that are defective in synthesis of threonine, an amino acid. These Thr- mutants do not grow on minimal medium, but they do grow on minimal medium supplemented with threonine. Ten of your Thr- mutants (numbered 1 through 10) were isolated in a strain of mating type a (MAT a). The other 10 Thrmutants (numbered 11 through 20) were isolated in a strain of mating type α (MAT α). You and your lab partner cross each of the MAT a strains to each of the MAT α strains, and you include crosses to the appropriate wild-type strains. Your experimental observations are shown in the table below, where (-) indicates diploids that did not grow on minimal medium and (+) indicates diploids that did grow on minimal medium
Based on these experiments, what is the minimum number of genes required for threonine synthesis?
#Question id: 9183
#SCPH06 I Botany
If you are interested in observing a relatively simple community structure in a clear water lake, you would do well to choose diving into ________.
#Question id: 5239
#SCPH06 I Botany
Which of the following statements is not true for Hfr strains of E. coli ?