Biology, 13.09.2019 21:30 kimarley816

Mutation is a random and non-adaptive process. this was first proven by:
a. lysenko and lamarck, using the removal of mouse tails as an environmental stress.
b. joshua and esther lederberg, using the removal of mouse tails as an environmental stress.
c. lysenko and lamarck, using replica plated e. coli and streptomycin as an environmental stress.
d. joshua and esther lederberg, using replica-plated e. coli and streptomycin as an environmental stress
e. mutation is not a random, non-adaptive process

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Answer from: claou6531

Option (d).

Explanation:

Mutation may be defined as the sudden, heritable change in the nucleotide sequence of the organism. Mutation may occur due to the errors in DNA replication or may occurs due to the mutagens.

Joshua and Lederberg experiment explains that mutation is the non adaptive and random process that occur in the organism. He used the replica plating of E.coli and grows them on streptomycin drug. The bacteria was grown on the the primary plate and they are transferred to the secondary plate with streptomycin drug in the growth environment. The resistant strain of bacteria grows in the streptomycin environment.The pattern of bacteria growth on the plate explained that mutation occurs randomly and it is a non adaptive process.

Thus, the correct answer is option (d).

Answer from: Quest

this is a good question! i'll do some research and come back when i have the answer!

Answer from: Quest

Schools are being forced to embrace computers. unlike their "digital immigrant" teachers, these students are "digital natives", born into a world where technology is an integral part of everyday life. almost every student has access to a multitude of computers, laptops and tablet devices. it would be crazy to assume an assignment would notbe written on computer in this day and age.many schools now have a 1-to-1 computer policy, and many districts and states in the united states have mandated computers or ipads across the state for every student, including los angeles, the second largest school district in the country.but the thing is, when they tried it in la, it wasn't the success they hoped for. that's because the tablets weren't used as much as they expected. rather, it appeared there was a gap between the digital native's love of technology and their use of it in the classroom.this conflicted relationship with computers is also underscored by much of the literature on education. it is also highlighted in professional development and conferences such as edutech.

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Mutation is a random and non-adaptive process. this was first proven by:
a. lysenko and lamar...

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