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For each step of gene expression, explain how DNA differences lead to phenotypic differences in the ability to taste PTC.
A plasmid contains genes for ampicillin resistance and tetracycline resistance and has single sites for restriction sites BglII, PstI and EcoRI. When genes are inserted into the PstI site, transformants are resistant only to ampicillin. In which r..
White tigers are indicated with unshaded symbols. (As you can see, there was considerable inbreeding in this lineage. For instance, the white tiger Mohan was mated with his daughter). In answering the questions, assume that hite.
In a generalized transduction experiment, phages are collected from an E. coli donor strain of genotype cys+ leu+ thr+ and used to transduce a recipient of genotype cys- leu- thr-.
What is the probability that, in an organism with a haploid number of 15, a sperm will be formed that contains all 15 chromosomes whose centromeres were derived from maternal homologs?
For both visual and blind predators, estimate what p will be by the 20th generation. If p > 1, then at what generation was one reached?
Determine what makes a molecule a hydrogen bond donor or an acceptor? Can a hydrogen on a carbon atom be a hydrogen bond donor? Explain your answer.
The decomposition of N2O5 in CCl4 proceeds as follows: 2N2O5 --> 4NO2 + O2. The rate law is first order in N2O5. At 64 degrees Celsius, the rate constant is 4.82 x 10^-3 S^-1.
Assume you are provided a solution of 5mM benzoic acid at pH 8. You determine the absorbance to be 2.9 ×103. You lower the pH to 3 with 100% acetic acid.
A cricket has a diploid genome of 1.2 billion base pairs. Assume that there are about 200,000 individuals in the population and that the mutation rate is one per 100 million base pairs. About how many new mutations will occur in each generation of..
What type of tissue would you choose if you wanted to produce clones? That is, if you wanted to produce a plant from a single cell? explain.
Describe the developmental program of a T cell, including positive and negative selection and changes in phenotypic markers
What is the difference between diets that are specifically designed for diabetics and diets for normal people?
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