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1. What does "ontogeny recapitulates phylogeny" mean; what can theembryo tell us about an organisms evolutionary history?
2. What did charles darwin mean when he coined the term "desentwith modification"?
In the common mouse species, Mus musculus, the mutant yellow fur gene is dominant to the allele for normal fur color. When homozygous.
A 20-year old single woman whose father died of Huntington's disease is concerned about her risk of eventually developing the disease. What is the probability that she will eventually get HD, if her mother is phenotypically normal?
When the antifungal agent myxothiazol is added to a suspension of chloroplasts, the PQH2/PQ ratio increases. Where does myxothiazol inhibit electron transfer?
The D. melanogaster genome consists of approximately 1.7 x 108 base pairs. If DNA synthesis occurs at a rate of forty base pairs per second, and the entire genome is replicated in ten minutes,
q1. data suggest that rubisco ribulose-1 5-bisphosphate carboxylase makes up 10 percent of the total protein found in
DNA is isolated from two different species. Both DNA samples are found to be exactly the same size. One of the DNA samples has a G+C/A+T ratio of 4.8 and the other 3.2.
125 progeny were produced from the following cross: aaBbCcDd x AaBbccDD. Assume that all the genes are unlinked, and that the uppercase letters represent dominant alleles.
Briefly describe five factors that decrease the stability of an helix. Include examples of specific amino acids with each factor that would act to destabilize a helix.
Gel filtration column was calibrated with blue dextran, its elution volume found to be 17.4 mL. Then, unknown protein and BSA were ran through the same column and eluted in 43 mL and thirty-six mL correspondingly.
q. in a particular species of guppy tails can either be long or short and either feathered or straight. a cross
Describe how the evolution of roots and simple vascular transport expanded the habitat of plants onto land.
The continuity of life is based on heritable information in the form of DNA, and structure and function are correlated at all levels of biological organization. In a short essay (100-150 words), describe how the structure of DNA is correlated with..
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