what does the Natural Killer Cell (NK) do?
What will be an ideal response?
kills cells with antibody on surface with perforin.
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The _____ techniqueis most effective for transcriptomics studies in non-model organisms because _____
a. DNA microarray; DNA sequences from related organisms can be used as probes. b. RNA-seq;it is less expensive c. DNA microarray; prior knowledge about the genome sequence is not required. d. RNA-seq; the probes used are smaller than those for DNA microarrays.
e. DNA microarray; fluorescence gives the best indication of gene activity.Molecular techniques have revealed that ____ caused the loss of forelimbs in snakes
a. the absence of Hoxc6 and Hoxc8 genes in snake genomes
b. selection in dinosaurian ancestors of snakes c. the lack of usefullimbs d. mutations in limb buds e. changes in the spatial pattern of Hoxc8gene expression
An intrauterine device
A. is used to cause abortions. B. prevent births. C. is a permanent form of birth control. D. All of the above are correct.
Which of the following Excavata members have hydrogenosomes?
A. Euglenozoa B. Fornicata C. Trichomonadida D. Trichonymphida