In pea plants, mendel found that the allele for smooth seeds (s) is dominant , while the allele for wrinkled seeds (s) is recessive. which punnett square shows crosses between plants heterozygous for smooth seeds and homozygous recessive for wrinkled seeds?
a.
s s
s ss ss
s ss ss
b.
s s
s ss ss
s ss ss
c. s s
s ss ss
s ss ss
d.
s s
s ss ss
s ss ss

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

Which of these transport mechanisms moves glucose from the blood into a cell? active transport diffusion facilitated diffusion osmosis

The hershey and chase experiments involved the preparation of two different types of radioactively labeled phage. which of the following best explains why two preparations were required? a. the bacteriophage used in the experiments was a t2 phage. b. it was necessary that each of the two phage components, dna and protein, be identifiable upon recovery at the end of the experiment. c. each scientist had his own method for labeling phage, so each conducted the same experiment using a different isotope. d. establishing the identity of the genetic material required observation of two phage generations.