Answer:
Brachydactyly and Huntington are phenotypic diseases that develop when a person has one or two dominant alleles for these traits.
John's father has the Huntington disease, but not brachydactyly so his genotype is Hh/bb.
John's mother is a healthy women with brachydactyly, so her's genotype is probably hh/BB or hh/Bb.
The answer is to reduce cardiac workload. The medical management whether a right or left sided cardiac failure would include lifestyle modification including dietary modifications. Also medications in reducing anxiety and dyspnea is also included.Hope this would be of help.
Answer: The correct answer is-
C. Insulin secretion in response to high blood sugar.
D. Increased heart rate in response to exercise.
F. Proton pumping to maintain a proper pH level.
Homeostasis can be described as a tendency of living organisms to maintain a state of stable internal environment. In other words, it is the tendency to resist any change in the optimal conditions for survival.
It is brought by several regulatory mechanisms in the body such as regulation of body temperature, regulation of pH, regulation of osmolarity etc.
- Whenever there is high blood sugar level, insulin hormone is secreted from pancreas that reduces the blood sugar level.
- Heart rate is increased in response to exercise so that more oxygen is transported through blood circulation and more amount of energy is harvested through cellular respiration in the form of ATP ( required in exercise).
- Pumping of proton maintains a proper pH level ( such as in lysosomes, where pH is highly acidic, high proton concentration is regulated through proton pumping).
Thus, option C), D), and F) are the examples of feedback mechanisms that help in maintaining homeostasis.
c) is the best answer here
Bacteria have tiny genomes in comparison with elephants: they also have much simpler mechanisms of transcription, translation and replication. They use different polymerases with lower fidelities than those in elephants. Further, because they live such short lives and reproduce so fast, it is likely that at least one bacterium in a culture will hit on the mutation that helps survival in the changed environment. Lateral gene transfer then ensures that the rest of the bacteria also receive this mutated gene - and the population continues to live.
In science we need definition