Mendel's model organism for studying inheritance was the garden pea. What are the advantages of using peas to study genetics?
_____ Garden peas are available in many varieties.
_____ Garden peas have a short generation time.
_____ Garden peas produce a large number of offspring with every mating.
_____ Mating between garden peas can be carefully planned and controlled.
__X__ Garden peas are available in many varieties.
__X__ Garden peas have a short generation time.
__X__ Garden peas produce a large number of offspring with every mating.
__X__ Mating between garden peas can be carefully planned and controlled.
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A keystone species is a species on which the persistence of a large number of other species in the ecosystem depends and whose impact on community structure is disproportionate to its relative abundance. Of the species tested in this simulation, which one is the most likely candidate for designation as a keystone species?
a. deer mouse b. mesquite c. prairie dog d. ferret
An organism that is eukaryotic is by definition:a
is a protist b. is unicellular c. possesses a nucleus d. possesses organ systems e. belongs to domain Bacteria
Robert is a salesperson. He ensures that he remembers his customer's name, title, and contact information before meeting him or her. Robert does this to:
a. understand if the customer genuinely has any motive to buy. b. create a strategic prospecting plan. c. select the best prospecting method. d. establish rapport with the customer. e. learn about the buying behavior of the customer.
Suppose that each species of Galápagos tortoise has a distinctive shell. Variations in shell size make some tortoises better adapted for defence. Imagine an island where many hunt on these tortoises; individuals with a larger shell would be more likely to survive and reproduce than would tortoises with smaller shells. These favoured individuals would pass on the genes that produce larger shells to their descendants, while those with smaller shells would not reproduce, leading to extinction. Which of the following would be most likely to drive this event?
a. spontaneous selection b. hereditary selection c. natural selection d. artificial selection