Which of the following structures is involved in forming a cleavage furrow?
A) mitotic spindle B) metaphase plate C) contractile ring D) sister chromatids
Answer: C
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In a cell with a diploid number of 12, how many chromatids are present at prophase of mitosis?
A) 6 B) 12 C) 24 D) 48 E) none of the above
Restriction fragment length polymorphisms (RFLPs) are used to ____
a. test the effectiveness of different restriction enzymes on a sequence of DNA b. compare the DNA sequences between individuals by looking for changes in restriction enzyme digest patterns c. compare the full DNA sequences of two individuals d. prepare DNA for further sequence analysis e. treat sickle-cell anemia
The serum of a person with blood type A and Rh- will have the ability to make which of the following antibodies?
A. Anti-B B. Anti-B and anti-Rh C. Anti-A and anti-Rh D. Anti-A E. Anti-A, anti-B, and anti-Rh
What is the function of the 5' cap in eukaryotic mRNA?
a. It provides an intron splicing signal. b. It helps with nuclear export. c. It provides attachment site for ribosomes. d. It stabilizes pre-mRNA.