Radioactive iodine is sometimes used to treat thyroid cancer. This is an example of the use of (isotopes/elements/radiation) in medical treatment
What will be an ideal response?
isotopes
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In fruit fly larvae, flies with which genotype possess the rover phenotype?
a. recessive alleles for foraging gene b. dominant allele for foraging gene c. recessive alleles for seeking gene d. dominant allele for seeking gene e. The gene for this behavior has not been discovered.
Because they are filter feeders, oysters are
most sensitive to pollution levels in their habitat and among the first organisms to suffer if pollution levels become too high. Oysters are an example of ___ species.
a. an endangered b. an endemic c. an indicator d. a threatened e. a conserved
If you were searching for anaerobic bacteria, you
would NOT look for them in a. the guts of farm animals. b. swamps. c. mountain streams. d. sediments of lakes and oceans. e. canned goods.
In poultry, rose comb is controlled by a dominant
allele, and its recessive allele controls single comb. (a) Give the genotype and phenotype produced from crossing a pure-breeding rose comb chicken with a pure-breeding single comb chicken. (b) Give the results of the backcross of the F1 hybrid with both pure-breeding parents. What will be an ideal response?