Question 51 – Selective breeding and genetic engineering - Questions

An agricultural research institute wants to develop a crop of barley ( $vulgareHordeum\ vulgare$ ) with enhanced resistance to salinity. They consider two distinct methods:

Method X: Crossing commercial barley varieties with a salt-tolerant wild barley relative, selecting the most salt-tolerant offspring, and backcrossing them over multiple generations.
Method Y: Isolating a sodium-proton antiporter gene ( $H v N H X 1$ ) from a halophytic plant and transferring it into the barley genome using an Agrobacterium tumefaciens plasmid vector.

Which of the following statements correctly identifies and describes these two methods?

Method X is genetic engineering because backcrossing artificially alters the genome sequence; Method Y is selective breeding because Agrobacterium is a natural pathogen.

Method X is selective breeding and is limited to genetic variation within sexually compatible species; Method Y is genetic engineering and can introduce genes from entirely unrelated taxa.

Method X relies on restriction endonucleases to splice chromosomes during meiosis; Method Y relies on homologous recombination to integrate the plasmid vector.

Both Method X and Method Y are classified as selective breeding because both techniques rely on natural selection to fix the desired alleles in the population.

An agricultural research institute wants to develop a crop of barley ( $vulgareHordeum\ vulgare$ ) with enhanced resistance to salinity. They consider two distinct methods:

Method X: Crossing commercial barley varieties with a salt-tolerant wild barley relative, selecting the most salt-tolerant offspring, and backcrossing them over multiple generations.
Method Y: Isolating a sodium-proton antiporter gene ( $H v N H X 1$ ) from a halophytic plant and transferring it into the barley genome using an Agrobacterium tumefaciens plasmid vector.

Which of the following statements correctly identifies and describes these two methods?

Method X is genetic engineering because backcrossing artificially alters the genome sequence; Method Y is selective breeding because Agrobacterium is a natural pathogen.

Method X is selective breeding and is limited to genetic variation within sexually compatible species; Method Y is genetic engineering and can introduce genes from entirely unrelated taxa.

Method X relies on restriction endonucleases to splice chromosomes during meiosis; Method Y relies on homologous recombination to integrate the plasmid vector.

Both Method X and Method Y are classified as selective breeding because both techniques rely on natural selection to fix the desired alleles in the population.

Selective breeding and genetic engineering

Question 22

Selective breeding and genetic engineering

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Selective breeding and genetic engineering

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Selective breeding and genetic engineering Questions

Selective breeding and genetic engineering

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Selective breeding and genetic engineering Questions