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1. A cross is made between a haploid strain of Neurospora of genotype nic+ adand another haploid strain of nic ad+. From this cross, a total of 1000 linear asci are isolated and characterized as in the following table. Map the ad and nic loci in relation to centromeres and to each other.
nic+ ad
nic+ ad+
nic ad
nic ad+
808
1
90
5
2. The X-linked orange gene has two alleles, O and o. These two are codominant, in that homozygous or hemizygous cats for o have the normal black pigment in their fur, while homozygotes or hemizygotes for Ohave the black pigment converted to orange. Heterozygotes are mosaics with patches of orange and black (known as tortie or calico).A mating between an orange female cat and a black male cat produces a male kitten who is a mosaic of black and orange fur. In one sentence, explain how this happened.
a series of protein free patient blood samples at time; 0, 30, 60, 90, 120, 180 mins. I also have a standard sample. I have measured absorbance of these samples; 0.655, 0.717, 0.689, 0.430, 0.852, 0.477 respectively
As a biologist it is your job to look for plants that have evolved structures with a selective advantage in dry hot conditions. Which of the adaptions would be least likely to meet the objective.
Assuming that the virus capsid is spherical, work with your classmates to calculate what is the maximum genome size (in nucleotides) that can fit into the capsid. How long in millimeters would this largest possible RNA genome be?
All known human cancers have been demonstrated to be caused by viruses, You have been asked to design a virus that causes cancer in humans. Which of the following cellular functions would this virus have to possess to cause a tumor (select all that..
Distinguish between mechanical advantages and disadvantages in lever systems and find out which kind of lever the doctor was using to test quadriceps muscle.
in guinea pigs yellow coat color is produced by homozygous genotype YY, cream color by heterozygous genotype YW and white by homozygous WW.
According to ABC model of floral development, which genes would be expressed in a showy ornamental flower with multiple sepals and petals but no stamens or carpels.
We are isolating DNA from a Marcian. THeir DNA turns out to be very very tiny, so we will use a very dense agarose gel to analyze the DNA. So, instead of the one percent agarose gels that we normally would use in lab,
Within a population of plants there are two alleles that code for flower color, red and white. Red is the dominant allele. If there are 300 red flowers and forty-five white flowers,
Cleavage of DNA with restriction enzymes provides landmarks and sequence information. How frequently are specific sites found? How many sites are expected? Does this change if the DNA is circular.
Data from enzyme kinetic studies of an enzyme at specific substrate concentration. Data below also include from studies with town different inhibitors.
Assume you count the number of bacteria in 5 of the 1/400mm^2 small boxes of the central grid on the Hemocytometer.
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