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Where in an angiosperm would you find a megasporangium?
A) in the style of a flowerB) within an ovule contained within an ovary of a flowerC) packed into pollen sacs within the anthers found on a stamenD) inside the tip of a pollen tubeE) enclosed in the stigma of a flower
The group of molecular biologists is trying to synthesize a new artificial compound to mimic the effects of a known hormone that influences sexual behaviour. They have turned to you for advice.
Assume you have a population of 3,320 AA; 640 Aa; and 12 aa genotype. Calculate the relative fitness w, and the selection coefficient for each 3 genotypes
Estimate the concentration of guaiacol in a 1650 microliter total volume solution containing 201 microliters of 25mM guaiacol.
Consider a mainland-island migration scenario where two alleles are segregating and the observed frequencies of heterozygotes are such that H=.32 for the mainland and H=.5 for the island. (These are the values of heterozygosity) What are Pisland a..
Explain the Hershey-Chase experiment. Describe in your own words, as if you were talking to someone with no genetics background.
Tay-Sachs disease (infantile amaurotic idiocy) is a rare human disease in which toxic substances accumulate in nerve cells. The recessive allele responsible for the disease is inherited in a simple Mendelian pattern. For unknown reasons, the allel..
The ß-hemoglobin locus in humans is implicated in resistance to falciparum malaria. Estimates of fitness vary geographically, but assume that, in one particular area with endemic malaria,
Assume you have a 12x solution of HEPES buffer and you require to use some for making 300 ml of solution Y. How much of the 12x HEPES buffer would you use, in ml?
The presence of nitrogen is what distinguishes amino acids from many of the other compounds found in intermediary metabolism,
A piece of DNA has unwound and the ends of the two strands have begun separating for replication. Describe, in full detail, the discontinuous synthesis of the lagging strand.
What is the function of electron transport.
Estimate the most likely type of change that occurred in the DNA (single-base substitution, insertion, deletion), the phenotypic effect of the mutation
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