If true-breeding red long radishes are crossed with true breeding white oval radishes, the F 1 will be expected to be which of the following?
A) Red and long
B) Red and oval
C) White and long
D) Purple and long
E) Purple and oval
Ans: D) Purple and long
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Gen-Probe Mycobacterium tuberculosis direct test uses which type of nucleic acid amplification test?
a. Nucleic acid sequence-based amplification (NASBA) b. Transcription-mediated amplification (TMA) c. Reverse transcriptase polymerase chain reaction (RT-PCR) d. Standard displacement amplification (SDA)
The disease caused by an enveloped single-stranded RNA arbovirus of the flavivirus family is
A. AIDS. B. malaria. C. yellow fever. D. herpes.
Virus size is
a. 300 to 400 ?m. b. 10 to 400 mm. c. 10 to 200 cm. d. 10 to 400 nm. e. 300 to 400 mm.
A zygote forms when
A) the nucleus from the sperm fuses with the egg nucleus. B) the sperm penetrates the zona pellucida. C) the blastocyst begins to form. D) the acrosomal cap is ruptured. E) meiosis II in the secondary oocyte initiates.