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a+, b+, c+ and d+ are independently assorting Mendelian genes controlling the production of a black pigment. The alternate alleles that give abnormal functioning of these genes are a, b, c, and d. A black individual of genotype a+/a+ b+/b+ c+/c+ d+/d+ is crossed with a colorless individual of genotype a/a b/b c/c d/d to produce a black F1. F1 x F1 crosses are then done. Assume that a+, b+, c+ and d+ act in a pathway as follows: colorless --a+--> colorless --b+--> colorless --c+--> brown --d+-->black.
a. what proportion of the F2 generation will be colorless?
b. what proportion of the F2 generation will be black?
c. what proportion of the F2 generation will be brown?
Discuss similarities and differences of the anatomical pathways that convey touch sensation and pain. Describe two functional consequences of these differences.
Who is the story about? What is he or she trying to do. What happens while he or she tries to do it? What happens in the end.
Briefly explain why digester sludge accounts to 5-10 percent of the total flow but contains 25-30 percent of the organic nitrogen.
Using the data given in table below draw a Lineweaver-Burk plot.
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Gene frequencies for the ABO alleles vary geographically. For example the I^A allele makes up nearly 50 percent of the genes for blood type among Australian Aborigines, about 25 percent in Central Asian populations,
During the method of inspiration, the ______ contracts, pulling downward. Also, the ______ muscles contract and lift the rib cage. Together, these muscle contractions result in the ______ in the pressure in the ______ cavity.
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A made-up disease called YUCK only develops in individuals who are homozygous recessive for that gene. An individual with the YUCK disease has parents that do not have this disease
Fossil with .9983 (Ur:Pb) in Africa
Assume you have a gel filtration column with unknown matrix. Describe how do you experimentally deteremine its void volume and exclusion limit
A analyzer discoveres that the correlation coefficient between the exposure to a dangerous chemical and the growth of a certain species of butterfly is -.40.
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