Which of the following is an example of gene cloning?
a. the fastest deer surviving in the wild
b. genetically modifying corn plants to produce the bt toxin
c. only allowing dogs to breed if they have good temperaments
d. choosing to plant seeds from the reddest, juiciest tomatoes

Which of the following is a main difference in cell structure between an onion cell and a human cheek cell? a. an onion cell contains one nucleus, whereas a human cheek cell contains two nuclei. b. an onion cell has a cell wall. c. a human cheek cell contains chloroplasts. d. there is no difference between an onion cell and a human cheek cell. you for your.

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above