If a double-stranded DNA has 20% adenine, then it will have ________ % cytosine
Fill in the blank(s) with correct word
30
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Why does the author seem skeptical about the idea of in-vitro fertilization leading to the evolution of a “genius species?”
a. Scientists can’t test embryos to see if certain genes are expressed. b. Scientist can’t select which embryos to implant c. There are too many genes thought to influence IQ, and they don’t know enough about the genetic basis of intelligence to select for it. d. All of the above
What do sea squirts and mussels have in common?
a. both are in the same phylum. b. both have incurrent and excurrent siphons. c. both are covered in a tunic. d. both reproduce asexually. e. both attach to the substrate using the same materials.
Calcium ions are stored in the sarcoplasmic reticulum
____________________ Indicate whether the statement is true or false.
Which microscope is most useful for visualizing a biofilm?
A) compound light microscope B) phase-contrast microscope C) fluorescence microscope D) scanning acoustic microscope E) transmission electron microscope