#Question id: 4905
#Unit 8. Inheritance Biology
Which of the correct feature of genetic material effect?
#Question id: 19823
#Unit 12. Applied Biology
The elicitors are recognized by receptor-like
molecules present in resistant plants. This recognition initiates several
biochemical reactions such as
1. Phytoalexin biosynthesis
2. Cell wall reinforcement
3. Release of hydrolytic enzymes
4. Rapid cell death
Which of the following is/are correct?
#Question id: 5697
#Unit 8. Inheritance Biology
Individual with pericentric inversion produce gametes that receive the recombinant chromosomes cannot produce viable progeny because
#Question id: 15362
#Unit 4. Cell Communication and Cell Signaling
#Question id: 12960
#Unit 10. Ecological Principles
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.