#Question id: 12960
#SCPH06 I Botany
The Norway rat (Rattus Norvegicus), a widespread pest, was controlled for about a decade by the anticoagulant warfarin. This chemical substance, placed in food pellets, is absorbed by the intestinal tract and inhibits the clotting of blood. After a population decline for about 10 years, rat populations increased and stabilized. In one European population, as illustrated in the graph below, the percentage of rats resistant to warfarin has remained fairly stable over a number of years.
Resistance to warfarin is governed by a dominant autosomal gene, R. More than 15 percent of the resistant animals are heterozygous at this locus (Rr). The table below indicates the response to warfarin and relative reproductive fitness of individuals that are homozygous or heterozygous for the dominant gene (R). The RR individuals have a 20-fold increase in vitamin K requirement over individuals.
#Question id: 3892
#SCPH01 Biochemistry
The DNA binding motif for many prokaryotic regulatory proteins, such as the lac repressor, is:
#Question id: 8293
#SCPH05 I Biotechnology
The importance of computers and of computer software to modern systematics s is most closely linked to advances in ________.
#Question id: 5242
#SCPH05 I Biotechnology
Auxotrohic bacteria plating on different medium, it is observed that colonies grow on minimal plus threonine only, no colony on minimal plus leucine and no colonies grow on minimal medium cystein only. What are the actual genotypes of auxotroph?
#Question id: 10957
#SCPH28 | Zoology
Which of the following would most likely be used for prophylaxis of transient ischemic heart attack?