Biology Domain 2 Mechanisms Of Genetics
This STAAR EOC Prep quiz will demonstrate mastery of the mechanisms of genetics.
- 1.Which of the following component of DNA is described properly?
- A.
A nitrogen base creates the backbone of the double helix
- B.
Uracil gives the mRNA its energy
- C.
A 5 carbon sugar is the central component of the nucleotide
- D.
Phosphate group which gives the DNA its positive charge
- 2.The components that make up the genetic code are common to
- A.
Archaea
- B.
Eukaryota
- C.
Prokaryota
- D.
All of the above
- 3.The image shown represents which stage of protein synthesis?
- A.
Replication of DNA
- B.
Translation of mRNA
- C.
Replication of tRNA
- D.
Transcription of mRNA
- 4.When a DNA molecule replicates, hydrogen bonds between base pairs break to unzip the molecule. The breaking of hydrogen bonds is an example of
- A.
A change of state
- B.
A physical change
- C.
A nuclear change
- D.
A chemical change
- 5.Gene expression
- A.
Is a regulated process
- B.
Most often produces lipids
- C.
Involves sixteen steps
- D.
Has nothing to do with traits
- 6.
What should the caption for this set of images be?- A.
Cancers
- B.
Translocations
- C.
Polyploidy
- D.
Frameshift mutations
- 7.Jamie has free earlobes, which are a recessive trait in humans. Her parents both have attached earlobes. What conclusion can be drawn from this information?
- A.
Jamie's parents are both homozygous for the dominant trait.
- B.
Jamie's parents are both homozygous for the recessive trait.
- C.
Jamie's parents are both heterozygous.
- D.
Jamie's grandparents all have free earlobes.
- 8.
The outcomes of the Punnett square shown would be BEST described as:
- A.
75% Round, 25% Wrinkled, 75% Yellow, 25% Green Phenotypes
- B.
50% homozygous dominant, 25% heterozygous recessive Genotypes
- C.
12:16:12:16
- D.
RRYY X rrYy X Rryy X rRYY X rryy
- 9.The specialized cells that result from meiosis
- A.
Are not gametes but are the result of asexual reproduction
- B.
Have one-half of the number of chromosomes as other body cells
- C.
Contain genetic information that determine the traits of the two organisms that produced them.
- D.
Cannot be modified by current human technology
- 10.
What should the caption for this picture be?
- A.
Meiosis charting
- B.
Rainbow grapevine genetic pairing
- C.
DNA fingerprinting
- D.
Spectral chromosomal analysis of the human genome
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