SAVVAS Inv 8 Exp 1 Molecular Technology

The importance of molecular technologies is:

• They help in understanding genetic diseases.

• They are not useful in modern science.

• They have no impact on healthcare.

• They are only used in chemistry.

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Recombinant DNA is used to:

• create genetically modified organisms

• study the effects of DNA mutations

• produce synthetic hormones

• all of the above

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What is the ultimate source of biological diversity according to the text?

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Breeders can increase the mutation rate of an organism by:

• exposing it to radiation

• providing more nutrients

• increasing its temperature

• reducing its population

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Polyploid plants are useful in plant breeding because they:

• have increased genetic diversity

• are more resistant to diseases

• grow faster than diploid plants

• produce larger fruits and flowers

What is the advantage of polyploidy in plants compared to animals?

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The purpose of isolating genes in scientific research is to:

• understand gene function and regulation

• create new species

• eliminate genetic diseases

• increase plant growth

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Selective breeding is a process used to develop particular traits in plants and animals. How are hybridization and inbreeding related to this process?

• Hybridization involves crossing different species, while inbreeding involves breeding within the same species.

• Hybridization and inbreeding are unrelated to selective breeding.

• Both hybridization and inbreeding are methods of selective breeding.

• Hybridization is a natural process, while inbreeding is a human-controlled process.

A polyploid plant is a plant that has more than two sets of chromosomes. What are the advantages of polyploid plants?

• Increased size and vigor

• Decreased resistance to diseases

• Reduced genetic diversity

• Lower yield potential

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The prefix trans means “across,” and generally refers to things being moved from one area to another. How does this prefix help you understand the meaning of the word transgenic?

• It indicates that genes are moved across species.

• It means genes are static and do not move.

• It suggests genes are deleted.

• It implies genes are duplicated.