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In humans, two traits, rolling the tongue and the ability to taste PTC, depend on separate dominant genes located on different chromosomes. A man that can roll the tongue (assume he is homozygous) that cannot taste PTC married a woman that can not roll the tongue that can taste PTC (whose mother can not taste this chemical). What is the probability that their first child will: (write down the cross and your calculations)
a. Either not being able to roll the tongue or not being able to taste PTC?b. Being both able to roll the tongue and able to taste PTC?c. Being both able to roll the tongue and not able to taste PTC?d. Either not being able to roll the tongue or being able to taste PTC?
What is the purpose of the long refractory period during cardiac muscle contraction (compared to that of skeletal muscle)? What could happen if cardiac muscle did not have this long refractory period? Explain.
The molecular weights (for the hind III fragments) beginning with the fragments nearest the origin are shown below. Explain why the fragments nearest the origin have more kilobase pairs.
you have been hired to prepare microbiological media for a laboratory on campus. you stayed up watching the final
How many different kinds of atoms or functional groups would be covalently bonded to a carbon that showed asymmetry and could exist
Using the diagnostic and statistical manual of mental disorders, choose a behavioral disorder, identify a candidate gene, and explain how a mutation in it might cause the phenotype.
How dehydration synthesis is responsible for polymerizing long organic chains? How you would calculate the removal of water when joining monomers of carbohydrates, lipids, proteins, and nucleic acids.
What is the calculated frequency of this sequence occurring in a genome?
how was Mendel able to isolate a particular trait for study? how did he control for outside factors that might confound his results?
Unsaturated fatty acids are often classified according to the number of carbon atoms between the terminal methyl carbon (the omega carbon) and the closest double bond to the methyl end of the chain.
In a study of 600 people, 345 have Rh+ and 255 were Rh-. Assuming Rh+ is dominant allele D and Rh- is recessive d, calculate the expected number of Rh+ people who are heterozygotes.
Two mice of the same species have different ear shapes. You find that one mouse, having normal shaped ears, was caught in a field in Kenya.
The recombination frequency between linked genes A and B is 40%; between B and C, 20%; between C and D, 10%; between C and A, 20%; between D and B, 10%. What is the sequence of the genes on the chromosome?
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