Answer:
The vision remains unaffected.
Explanation:
Rods and cones are two types of photo receptor cells present in the organism. Cone cell helps in the visualization of color whereas rod cells are involved in the light intensity.
The cat was stuck in the neighbor's cellar with enough food and water. The cat was stuck in the basement with pitch-black but this does not affect the vision of cat. Cats are nocturnal animals and has large amount of rod cells that enable them to see at night. Thus, her vision remains unaffected.
Answer:
plasmid
Explanation:
plasmid
The human insulin gene is inserted into each plasmid. The plasmid acts as a vector - it is used to transfer DNA from one organism to another. Bacterial cells are made to take up the genetically modified plasmids.
The fossils that provide information on the formation of an oxygen-rich atmosphere are the stromatilites from the Precambrian era. These are layered and columnar fossils consisting mainly of cyanobacteria which were the original life form back then. These bacteria took in carbon dioxide and produced oxygen by photosynthesis as early as 2.5 billion years ago (the earth is about 4.5 billion yrs old).
