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We now know that the gene for flower color and the gene for seed color are both on chromosome 1 of the pea plants once studied by Mendel. According to Mendel's results, flower color and seed color undergo independent assortment. Which of the following explanations is most likely?Answer
a. During a round of meiosis, the female part of a flower failed to separate a homologous pair forcing the seed color gene to pair up with the flower color gene.
b. These genes are so far apart on chromosome 1 that they undergo independent assortment.
c. Nonhomologous chromosomes containing the two genes underwent crossing over to create a new "hybrid" chromosome containing both genes.
d. Between the time that Mendel studied peas and modern times, one of the genes was translocated onto chromosome 1 so that in modern times two genes that were once on separate chromosomes are now linked.
Suppose that a series of compounds has been found in Neurospora . Compounds A-F appear to be members of an enzyme pathway.
Three groups of cyclists shown above consumed 3-different types of diets: high-carbohydrate, a diet mixed in carbohydrates, or a diet higher in protein and fat.
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describe the sequence of events that lead to the exocytosis of acetylcholine in the synaptic cleft of a postganglionic parasympathetic neuron. Start with an exon dendritic nicotinic receptor in a terminal ganglia.
AA Aa aa Generation 1 250 500 250 Generation 2 750 200 50 Generation 3 900 90 10 (1) Is this population remaining in HW Equilibrium from generation to generation.
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During the nineteenth century, the new theory of evolution was criticized on grounds that if an advantageous variant trait happened to appear in a population,
Assume you work with petunias and you have identified a single gene that causes their flowers to either be all pigmented (solid), or streaked with white.
Assume you examine the stability of your favorite protein kinase and find that half of the protein is degraded every 10 minutes.
For each of the four major themes of animal evolution used in this course, describe the advantages and disadvantages of the trait. Next, list the major groups each major theme produced, and comment on the number of species and individuals in those..
Explain how you would prepare 200 ML of a 0.25 Msoluation of NaOH from a 3 M stock solution?
Small molecules move through membranes in different ways -- different for different molecules or compounds, that is.
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