Which of the following uses a special form of DNA polymerase to rapidly increase the number of copies of specific regions of DNA for special analysis?
a. Gel electrophoresis
b. Polymerase chain reaction (PCR)
c. Cloning
d. Annealing
b. Polymerase chain reaction (PCR)
Polymerase chain reaction (PCR) uses a special form of DNA polymerase to rapidly increase the number of copies of specific regions of DNA for special analysis, such as forensic investigations, paternity tests, and comparing ancient DNA fragments with modern organisms.
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Albinism is a recessive disorder in which the skin and hair fail to produce pigment. The following question(s) ask you to evaluate the pedigree chart shown here in which "N" is the allele for normal pigmentation and "n" is the allele for albinism. The shaded circles for Deirdre and Shannon represent the only individuals expressing the disorder.
What was the probability that Deirdre and Geoff's first child would express the albino trait?
A. 1/2 B. 3/4 C. 1/8 D. 1/4
This cellular structure lacks a membrane:
A. microbody B. nucleus C. nucleoid D. endoplasmic reticulum E. Golgi body
During the luteal phase, a __________ forms from cells that surrounded the egg. Fill in the blank(s) with the appropriate word(s)
Gene silencing is a form of regulation controlled by repressor proteins
Indicate whether the statement is true or false