Which of the following structures consists mainly of white matter?
A. Corpus callosum
B. Cerebral cortex
C. Thalamus
D. Caudate nucleus
E. Broca area
Ans: A. Corpus callosum
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Which of the following contributes to the continued development and maintenance of the uterus during pregnancy?
A) inhibin B) testosterone C) oxytocin D) prolactin E) progesterone
Complete the following sentence. An intron is _______________________
A. a protein that is clipped out post- translationally B. RNA that is removed during the processing of an RNA molecule and remains inside the nucleus C. part of an intact, mature mRNA that leaves the nucleus D. a transfer RNA that binds to the codon E. a series of amino acids at the end of a new polypeptide that directs transcription to the ER
The cross L p q / l P Q × l p q / l p q is carried out. If the L gene is in the middle, between genes P and Q, what would be the genotypes of the double crossover gametes in this cross?
A) L P Q and l p q B) L p Q and l P q C) l p Q and L P q D) L p q and l P Q E) cannot be determined
Precarcinogens are themselves not carcinogens but may be modified in the liver to become a carcinogen by a process known as ________
Fill in the blank with correct word.