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You isolate a mutant plant with a defective desaturase enzyme, such that it is no longer capable of homeoviscous adaptation when temperatures drop from 37 degrees centigrade (summer in Kansas) down to 10 degrees (fall temperatures). What will the effect of this mutation be on either (pick one) a) chloroplast […]

In a yeast plasmid shuffle, you use three different selectable markers in your strain at the time you are screening for the conditional alleles of interest. The first marker is in the chromosome, the second marker is on the plasmid that carries the wild type copy of the gene of […]

A geneticist makes a cross between two homozygous strains (lines) of maize with three different mutations. The specific genes are as follows. F = striped leaf, B = a bronze aleurone and K = crinkled leaf. For symbols, you can use a capital to indicate the dominant (WT) allele. He then backcrosses the […]

Q1. Why will someone suffering from hyponatremia, a deficiency of sodium ions in blood, suffer from neurological symptoms ranging from tiredness, and muscle cramps to seizures and possible coma? How may someone become hyponatremic in a country where the salt content of food is generally very high? Q2. Did you […]