Barbara McClintock Discovered Mobile Elements in Corn by Analyzing the Genetic

question 35

Multiple Choice

Barbara McClintock discovered mobile elements in corn by analyzing the genetic behavior of two elements,Ds and Ac.The interplay between these two elements has become one of the most interesting stories of discovery in the field of genetics.How do Ds and Ac interact?

• A)The movement of Ac is dependent on two forms of Ds.
• B)Both elements can move only within chromosome 9.
• C)Ac causes a deletion next to the insertion site of Ds.
• D)While Ds moves only if Ac is present in the genome,Ac is capable of autonomous movement.
• E)Ds causes a deletion next to the insertion site of Ac.

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Definitions:

Dominant Type

signifies the most prevalent or influential species, form, or kind within a particular environment or context.

Cenozoic

The current geological era, beginning 66 million years ago and characterized by the dominance of mammals, birds, and flowering plants.

Mesozoic

An era of geological time from about 252 to 66 million years ago, known for the dominance of dinosaurs and the development of mammals and flowering plants.

Dominant Creatures

Referring to the species that exert the most influence over their environment or ecosystem, often due to their population size, biomass, or ecological role.