The two groups representing the "jawless" fishes are:a
Cephalochordata and Placoderms.
b. Chondrichthyes and Actinistia.
c. Myxini and Petromyzontida.
d. Dipnoi and Actinistia.
e. Placoderms and Petromyzontida.
C
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Several fluorogenic dyes can be used simultaneously in a sample as long as they each emit light at a different measurable wavelength
Indicate whether the statement is true or false.
What is gross primary production?
A. The carbon fixed during photosynthesis. B. All of the carbon fixation after cellular respiration is accounted for. C. Energy released by both primary and secondary consumers. D. Photosynthetic production plus energy recycled through detritivores. E. None of the answers is correct.
Homeotic gene products _____
a. flank a bacterial operon b. map out the overall body plan in embryos c. control the formation of specific body parts
How is the lytic cycle different from the lysogenic cycle with respect to the infected host cell?
a. The host cell is allowed to live during the lytic stage. b. The host cell can only divide during the lytic stage. c. The host cell dies during the lytic stage. d. The viral DNA may integrate into the host genome during the lytic stage.