Plants are more readily manipulated by genetic engineering than are animals because

(A) plant genes do not contain introns.

(B) more vectors are available for transferring recombinant

DNA into plant cells.

(C) a somatic plant cell can often give rise to a complete

plant.

(D) plant cells have larger nuclei.

Short Answer

Expert verified

(A) The option “plant genes do not contain introns” is false.

(B) The option “more vectors are available for transferring recombinant DNA into plant cells” is false.

(C) The option “a somatic plant cell can often give rise to a complete plant” is true.

(D)The option “plant cells have larger nuclei” is false.

Step by step solution

01

Step 1: Genetic Engineering

Genetic engineering is the process of altering the genetic structure by using recombinant DNA technology. It involves the horizontal transmission of genes between two organisms that include the transfer of a gene from an organism to another.

The aim behind this technique is the production of desired phenotypes in an organism that can provide disease resistance, increased yield, and many other benefits.

02

Explanation of option ‘(A)’

Introns are segments of genes that do not express or code for proteins. They make a large part of the genome of the eukaryotes. These sequences interrupt the coding sequence of the genome in all of these organisms.

Thus, plants contain introns in their genome.

Therefore, the given option is false.

03

Explanation of option ‘(B)’

Many types of vectors are commonly used in recombinant DNA technology to transfer the DNA in a host. Mainly plasmids and virus-based vectors are used in plants and animal transformation.

Thus, vectors are available for plants and animals, both for carrying recombinant DNA.

Therefore, the given option is false.

04

Explanation of option ‘(C)’

Plants are able to produce a complete plant from only division in the single cell that involves the totipotency of the cell. In contrast, animals do not have the ability to undergo this type of propagation.

Thus, plants are easier to manipulate in comparison to animals.

Therefore, the given statement is true.

05

Explanation of option ‘(D)’

Nuclear size depends on the size of the cell in which it is found. Typically, it occupies 8 percent of the cell volume, and cell size depends on its function, not on the organism containing it.

Thus, it is not a reason for the easy genetic manipulation of a plant.

Therefore, the given statement is false.

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Most popular questions from this chapter

You hope to study a gene that codes for a neurotransmitter protein produced in human brain cells. You know the amino acid sequence of the protein. Explain how you might (a) identify what genes are expressed in a specific type of brain cell, (b) identify (and isolate) the neurotransmitter gene, (c) produce multiple copies of the gene for study, and(d) produce large quantities of the neurotransmitter for evaluation as a potential medication.

A paleontologist has recovered a bit of tissue from the 400-year old preserved skin of an extinct dodo (a bird). To compare a specific region of the DNA from a sample with DNA from living birds, which of the following would be most helpful in increasing the amount of dodo DNA available for testing?

(A) SNP analysis

(B) polymerase chain reaction (PCR)

(C) electroporation

(D) gel electrophoresis

List at least three different properties that have been acquired by crop plants via genetic engineering.

If the template strand has two or more identical nucleotides in a row, their complementary nucleotides will be added one after the other in the same flow step. How are two or more of the same nucleotide (in a row) detected in the flowgram? (See sample on the right.) Write out the sequence of the first 25 nucleotides in the flow-gram above, starting from the left (Ignore the very short lines.)

Imagine you want to study one of the human crystallins, proteins present in the lens of the eye (see Figure 1.8). To obtain a sufficient amount of the protein of interest, you decide to clone the gene that codes for it. Assume you know the sequence of this gene. Explain how you would go about this.

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