Grade 10 Genetics and Genetic Engineering

What is the basic unit of DNA?

• amino acid
• protein
• nucleotide
• sugar

Which statement correctly describes the sequence of bases found in DNA?

• It changes every time it replicates.
• It determines the characteristics that will be inherited.
• It is exactly the same in all organisms.
• It directly controls the synthesis of starch within a cell.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

If a portion of Strand I of DNA has the base sequence GATCAC, what is the sequence of bases on the complementary Strand II?

• GATCAC
• CUAGUG
• CTACAC
• CTAGTG

What determines the kind of genes an organism possesses?

• type of amino acids in the cells of the organism
• sequence of the subunits A,T,C, and G in the DNA of the organism
• size of simple sugar molecules in the organs of the organism
• shape of the protein molecules in the organelles of the organism

Tags

NGSS.HS-LS1-1

How many bases encode one amino acid?

• 1
• 2
• 3
• 4

Changes in the genetic code of a human can be transmitted to offspring if they occur in

• cancer cells
• cell membranes
• skin cells
• gametes

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

NGSS.HS-LS4-2

A single gene mutation results from

• a change in a base sequence in DNA
• recombination of traits
• the failure of chromosomes to separate
• blocked nerve messages

Tags

NGSS.HS-LS3-2

A characteristics of a DNA molecule that is NOT a characteristic of a protein molecule is that the DNA molecule 

• can replicate itself
• can be very large
• is found in nuclei
• is composed of subunits

Which statement best describes a chromosome?

• It is a gene that has thousands of different forms.
• It has genetic information contained in DNA.
• It is a reproductive cell that influences more than one trait.
• It contains hundreds of genetically indentical DNA molecules.

Tags

NGSS.HS-LS3-1

If 15% of a DNA sample is cytosine, C, what percentage is guanine, G?

• 15%
• 35%
• 70%
• 85%