When the homologous chromosomes separate during meiosis I, each daughter nucleus receives
What will be an ideal response?
one member from each pair of chromosomes.
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Why do scientists insert their DNA of interest into the middle of the lacZ coding sequence?
a. It makes the bacteria resistant to the antibiotic. b. It provides a way for researchers to sort the bacteria that have the cloning plasmid from the bacteria that don't have the cloning plasmid. c. It aids scientists in developing new antibiotic treatments. d. It provides a way for sorting bacteria that have the gene of interest from the bacteria that just have an "empty" cloning plasmid. e. It makes the bacteria produce more clones.
Starch and cellulose can provide animals with energy only if they are first broken down into ________molecules
a. water b. glucose c. sucrose d. carbon dioxide e. amino acids
Each species in a community has its own
__________, or way of living. Fill in the blank(s) with the appropriate word(s).
Eyes are relatively vulnerable to infection because
A. there is scant normal microbiota to serve a protective role. B. immune privilege restricts access to the cells conferring innate immunity. C. they are not covered by keratinized epithelium. D. All of these answers are correct.