Genetics Review (Regents Questions)

What is the order of organization of genetic material from largest to smallest?

• nucleus, cell, gene, chromosome

• cell, nucleus, chromosome, gene

• gene, chromosome, nucleus, cell

• chromosome, nucleus, gene, cell

Which of the following best describes a human chromosome?

• It contains genes that may code for the production of enzymes.

• It is made of amino acid subunits that form genes.

• It is normally passed to the next generation through a placenta.

• It varies in function from one generation to the next.

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NGSS.HS-LS3-1

If 15% of a DNA sample is made up of thymine, T, what percentage of the sample is made up of cytosine ,C?

• 35%

• 15%

• 85%

• 70%

The shape of a protein is most directly determined by the

• kind and sequence of amino acids in the protein.

• amount of energy available for the synthesis of the protein.

• type and number of DNA molecules in a cell.

• mistakes made when the DNA is copied.

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NGSS.HS-LS1-1

If a strand of DNA reads CCTATC, what would be the complementary strand?

• CCTATC

• GGATAG

• GGAUAG

• CCUAUC

Researchers have found that formaldehyde and asbestos can alter DNA base sequences. Based on this research, the use of these chemicals has been greatly reduced because they

• are capable of causing mutations in humans

• may act as fertilizers, increasing the growth of algae in ponds

• have been replaced by more toxic compounds

• interfere with the production of antibiotics by white blood cells

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NGSS.HS-LS3-2

In sexually reproducing organisms, a mutation can be inherited if the occur in

• either the egg or the sperm

• the egg, only

• the sperm, only

• a body cell of either the mother or father

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

Coded instructions that are passed from one generation to the next can be most directly changed by the process of

• passive transport, natural selection, and synthesis

• selective breeding, replication, and absorption

• evolution, reproduction and digestion

• recombination, mutation, genetic engineering

Tags

NGSS.HS-LS3-2

If a gene is inserted into a bacterial cell, every cell produced by that cell will have

• a copy of the inserted gene

• DNA that is different from that of the other cells produced

• a 50% chance of having a copy of that gene

• a new type of DNA base

Cotton plants produce seeds that contain high quality protein. This protein could be used as a food source except that the seeds are poisonous to humans. Recently, scientists have inserted a section of DNA into the cotton plants that make the cotton seeds nonpoisonous. The technique for this procedure is known as

• cloning

• gene manipulation

• reproduction

• direct harvesting