You are assembling a model of a chromosome, but begin having some trouble when you get to the step of forming chromatin loops. If you are unable to resolve this problem, what step of chromosome structure would you be unable to achieve?
A. nucleosome
B. histone/DNA complex
C. solenoid
D. rosettes
Answer: D
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What will be an ideal response?
A woman was told by her doctor that while she is pregnant, she might want to let someone else care for her cats so she would not contract toxoplasmosis. What is the mechanism of transmission of toxoplasmosis?
A. infection from mice the cat may bring into the house B. exposure to infected cat feces C. infection from saliva D. scratches from infected claws E. flea bites transmit the organism
Schizophrenia has been shown to be a single gene disorder. Indicate whether the statement is true or false
Eukaryotes that are not closely related and that do not share many anatomical similarities can still be placed together on the same phylogenetic tree by comparing their _____
A) plasmids B) mitochondrial genomes C) homologous genes that are poorly conserved D) homologous genes that are highly conserved