In a cross between a true-breeding plant bearing smooth, yellow seeds and a true-breeding plant with
wrinkled, green seeds, the offspring were all smooth and yellow. What is the genotype of the F1
plants?
A. SSYY
B. ssyy
C. SsYy
D. ssYY
E. SSyy
C
You might also like to view...
Which is not a typical food item for polychaetes?
a. live capture of fish b. live capture of invertebrates c. detritus d. suspension feeding on plankton
Steroid hormones do not require a membrane receptor because they:
a. are small enough to pass directly through pores in the membrane b. are lipid-soluble and pass through the bilayer c. pass through special channels d. are water-soluble e. dissolve in the cholesterol of the membranes
Since 1980, the proportion of adults in the United States who are obese has ____
a. decreased by half b. doubled c. tripled d. decreased dramatically e. stayed the same
You are studying an individual with very low levels of insulin in her blood. Further analysis indicates that cells of her pancreas are producing normal levels of this protein, but it is accumulating in the cytoplasm rather than being secreted from the cells. Which hypothesis makes the most sense to explain this observation?
A. A missense mutation has caused premature termination during translation of this protein. B. A missense mutation has altered the ribosome-binding sequence at the 5' end of the mRNA. C. A two-base deletion near the middle of the gene has altered the reading frame during translation of the protein. D. A small deletion has removed the nucleotides that code for the signal sequence at the amino terminus of the protein. E. A chromosomal segment that includes the gene for insulin has been inverted.