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Q. Two genes organize in corn snakes as follows: O-B is brown snakes, O-bb are orange, oo bb are albino. An orange snake was mated to a black snake, and a large number of F1 progeny were obtained, all of which were brown. When the F1 snakes were mated to one another, they produced 100 brown offsprings, 25 orange, and 22 black and 13 albinos. What are the genotypes of the f1 snakes? What proportions of the dissimilar colours would have been expected among the F2 snakes if the loci assort independently? Do the observed result differ significantly from what was expected, assuming independent is occurring? What is the possibility that differences this great between observed and expected values would happen by chance?
Create a point mutation in the gene that will result in a genotype change, but not a phenotype change. Circle the point mutation on the DNA strand and name an agent that causes point mutations.
A diploid species has 2n = 52 chromosomes. If you found a monosomy in a member of this species, how many chromosomes would it have?
What are the evolutionary implications of the two major strategies of egress. Viruses that egress by lysis are less "successful" from an evolutionary perspective because they kill their host cells.
The pUC series plasmid contains LacZ gene with multiple cloning site. Suppose if you insert a piece of DNA into this LacZ gene, how will you tell which one is your recombinant.
The interaction between bases on different strands of DNA molecules depends somewhat on the identities of neighboring bases. For example, the melting temperature of an oligonucleotide
Nitric oxide from car exhaust is a primary air pollutant. Calculate the equilibrium constant for the reaction: N2 (g) + O2 (g) = 2NO (g) @ 25C using the data listed in Appendix 2.
Describe the deficiency/toxicity relationship of trace minerals and why other nutrients do not have similar toxicity conditions.
Ralph was born without sweat glands. Will this have a significant effect on his ability to maintain normal water balance?
Why would the relationship between a predator like a wolf and a plant like clover be considered neutral? Could these organisms be indirectly related, and if so, how?
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What happens when two solutes (glycerol and ethylene glycol) are competing for the same carrier? Does it affect the time that it takes for hemolysis to occur in freshwater fish's RBC? Which would be faster or slower and how would you know since th..
Would two nucleotides at a time be sufficient to provide enough codons to code for all twenty amino acids? Discuss how many amino acids could be coded for by codons containing only two nucleotides?
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