The first stage in the development of the nervous system is
a. gastrulation.
b. blastulation.
c. neurulation.
d. morulation.
e. festination.
C
Biology & Microbiology
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Which one of the following types of proteins interacts directly with a stop codon?
A. release factor B. initiation factor C. transcription factor D. elongation factor E. sigma factor
Biology & Microbiology
Ian and Bryony are both carriers for two autosomal recessive disorders, PKU (chromosome 12) and cystic fibrosis (chromosome 7). They are expecting a daughter. What is the probability that she will have PKU but not CF?
A) 9/16 B) 3/16 C) 1/2 D) 1/16
Biology & Microbiology
Which DNA damaging agent can transfer methyl groups (—CH3) to the nucleotide bases in DNA?
a. UV light b. Chemicals in tobacco smoke c. Ionizing radiation d. X-rays e. Free radicals
Biology & Microbiology
ob/ob mice
What will be an ideal response?
Biology & Microbiology