Karyotyping
A) shows chromosomes as they appear in metaphase of meiosis II.
B) can reveal alterations in chromosome number.
C) examines points of crossing over.
D) reveals the presence of cancerous genes.
Answer: B
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What is the difference between mismatch repair and nucleotide excision repair?
A. In mismatch repair, several nucleotides are replaced, whereas in nucleotide excision repair it is just one. B. In mismatch repair, one nucleotide is replaced, whereas in nucleotide excision repair several nucleotides are replaced. C. In mismatch repair, several nucleotides are replaced, whereas in nucleotide excision repair the sugar phosphate backbone is fixed. D. In mismatch repair, the sugar phosphate backbone is fixed, whereas in nucleotide excision repair, several nucleotides are replaced.
19th-century naturalists tried to reconcile traditional beliefs with physical evidence of ____________________. Fill in the blank(s) with the appropriate word(s)
Gel electrophoresis separates DNA fragments according to their:
A. percentage of labeled nucleotides B. base sequence C. number of attached primers D. size
In humans with a very mild form of anemia, the hemoglobin molecule is affected by which of the following mutations?
A. Base-pair substitution B. Deletion C. Insertion D. Frameshift mutation E. Intron mutation