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draw the structure of an RNA hairpin with a 10-bp stem and a 5n-t loop. make up a sequence that will form such a structure. show the sequence in the linear as well as the hairpin form.
A geneticist crosses a pure breeding strain of peas producing yellow, wrinkled seeds with one that is pure breeding for green, smooth seeds.
Discuss how do eukaryotic microorganisms such as yeast (S.cerevisiae) or algae maintain genetic diversuty in the population?
You treat a partially purified preparation of protein with a reagent that breaks bonds between sulfur atoms. Which level(s) of protein structure are likely to be affected the most and WHY?
What would be the expected frequencies of the homozygous dominant, heterozygous, and homozygous recessive after 100 generations.
What phenotypic ratio would you get if you crossed a white mouse and a heterozygous brown mouse?
Cells proofread and repair errors in the genetic information encoded in DNA. But lasting mistakes, or mutations, can happen. The most error-prone stage in DNA replication occurs after parent DNA strands have separated but before new complementar..
Explain where do cells obtain their main macronutrients including C, N, H, and O, write down the general microbial cell formula.
Explain two ways in which a change in a DNA molecule could lead to the emergence of a constitutive mutant. How could these two types of constitutive mutants be distinguished genetically.
Prader-Willi syndrome is caused by the deletion of the paternal copy of a small section of human chromosome fifteen. In normal individuals, only the paternal copies of the genes in this section of chromosome fifteen are expressed;
Explain about the cell wall and nucleoid of bacterial cell, their structure and composition in detail. Explain the functions of the sensory neurons, interneurons, and motor neurons in the nervous system in brief.
Roger has arthritis and has been taking prednisone (a glucocorticold) at prescribed levels for two months. He isn't feeling well and complains of repeated colds. He is puffy (edematous). Describe the reason for these symptoms.
List three viral genera that contain circular, ss DNA indicate the family it belongs to, and one host for each.
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