Which discovery was determined about DNA from x-ray diffraction data?
a. DNA is uniform in length.
b. DNA is short and narrow.
c. DNA has a repeating pattern.
d. DNA molecules are flat.
e. DNA molecules are round.
ANSWER: c
You might also like to view...
Where does the Calvin cycle occur?
a. thylakoid membrane b. thylakoid lumen c. stromal lamellae d. cytosol e. stroma
A core sample is taken 100 km west of and parallel to a ridge system. Magnetic readings of the rock show a reversal of the Earth's magnetic field. How many km east of the ridge system must scientists travel to collect a core sample with the same magnetic properties?
a. 50 b. 100 c. 200 d. 0 km; collect the sample directly at the ridge
The sum total of all the genes in an interbreeding population is the gene pool. Indicate whether the statement is true or false
Autosomes represent ____
a. all chromosomes including the sex chromosomes b. the half of the chromosomes inherited from one parent c. all chromosomes other than the sex chromosomes d. chromosome pairs with unlike members e. those chromosomes found only in gametes