In pea plants, round peas are dominant (R) and shriveled peas are recessive (r), and yellow peas (shown as light gray in the Punnett square) are dominant (Y) and green peas (dark gray) are recessive (y). Using this information and the partial Punnett square shown, what is the phenotypic ratio of the offspring pea plants in this Punnett square?
A) 12:1:1:4
B) 9:3:3:1
C) 3:3:1:1
D) 1:1:1:1
Answer: C
You might also like to view...
You have been assigned to address a problem of overpopulation of species X in a nearby county. One of the members of your team suggests introducing species Y, which is a natural predator of species X, but not normally found in the area. After some discussion, you go ahead and introduce species Y. What aspects of the hierarchical organization may be affected within a period of a several years?
A. organism, population, species B. population, species, community, biosphere C. population, species, community D. population, community
Which two enzymes do DNA researchers need to cut and paste DNA from different sources?
a. restriction enzymes and DNA ligase b. restriction enzymes and DNA polymerase c. DNA ligase and DNA polymerase d. restriction enzymes and helicase
e. helicases and DNA polymeraseThrough meiosis
a. alternate forms of genes are shuffled. b. parental DNA is divided and distributed to forming gametes. c. the diploid chromosome number is reduced to haploid. d. offspring are provided with new gene combinations. e. all of these occur.
Park officials needed to repair the old mill dam in a state park and so had to drain the pond behind it, killing all the animals and many of the plants in the water
After the pond reformed and many years passed, a certain species of fish established itself in the pond and remained there for more than 400 years. Which most directly describes the role of that type of fish? A) climax species B) pioneer C) producers D) invaders