Want to see correct answers?
Login or join for free!
  Biology Worksheets
Looking for Biology worksheets?
Check out our pre-made Biology worksheets!
Share/Like This Page
Filter By Grade

You are browsing Grade 9 questions. View questions in All Grades.

Grade 1 Grade 2 Grade 3 Grade 4 Grade 5 Grade 6 Grade 7 Grade 8 Grade 9 Grade 10 Grade 11 Grade 12 College Graduate Continuing Education

Browse Questions

Ninth Grade (Grade 9) DNA, RNA, and Genetics Questions

You can create printable tests and worksheets from these Grade 9 DNA, RNA, and Genetics questions! Select one or more questions using the checkboxes above each question. Then click the add selected questions to a test button before moving to another page.

Previous Page 2 of 23 Next
Grade 9 DNA, RNA, and Genetics
To determine the genotype of an individual that exhibits the dominant phenotype, you would cross that individual with one that is                                      .
  1. heterozygous dominant for that trait
  2. homozygous recessive for that trait
  3. homozygous dominant for that triat
  4. heterozygous recessive for that trait
Grade 9 DNA, RNA, and Genetics
The macromolecule involved in controlling a cell's activity that stores and moves genetic information is
  1. a carbohydrate.
  2. a nucleic acid.
  3. water.
  4. glucose.
Grade 9 DNA, RNA, and Genetics
Which are primary sources of genetic variation?
  1. immigration and allele frequencies
  2. genetic shuffling and immigration
  3. mutations and immigration
  4. mutations and genetic shuffling
Grade 9 DNA, RNA, and Genetics
Which series is the correct pathway for protein synthesis?
  1. DNA, RNA, protein synthesis
  2. protein synthesis, RNA, DNA
  3. DNA, protein synthesis, RNA
Grade 9 DNA, RNA, and Genetics
Which is NOT a stop codon that you might find on mRNA?
  1. UAA
  2. UGA
  3. UAG
  4. AGG
Grade 9 DNA, RNA, and Genetics
Another way that genetic variation is introduced into a population would be through
  1. mimicry.
  2. mitosis.
  3. meiosis.
  4. mutation.
Grade 9 DNA, RNA, and Genetics
Which nitrogenous bases are paired correctly?
  1. AB-CD
  2. AT-CG
  3. AC-DC
  4. AC-TG
Grade 9 DNA, RNA, and Genetics
What is produced during transcription?
  1. mRNA molecules
  2. DNA molecules
  3. rRNA molecules
  4. proteins
Grade 9 DNA, RNA, and Genetics
When two dragons mate, they produce a dragon that has characteristics of both parents. What two characteristics of life does this process demonstrate?
  1. reproduction and heredity
  2. homeostasis and heredity
  3. growth and heredity
  4. metabolism and reproduction
Grade 9 DNA, RNA, and Genetics
A female guinea pig that is homozygous dominant for black fur is mated with a male heterozygous for black fur. Fur color is determined by Mendelian patterns. In a litter of eight offspring, there will probably be                                                                                                     .
  1. 8 black guinea pigs (all homozygous)
  2. 8 black guinea pigs (half homozygous and half heterozygous)
  3. 2 black (homozygous), 4 gray (heterozygous), and 2 white (homozygous) guinea pigs
  4. 4 black guinea pigs (half homozygous and half heterozygous) and 4 white guinea pigs (all homozygous)
Grade 9 DNA, RNA, and Genetics
Most mutations                              .
  1. have no effect on an organism
  2. are fatal to an organism
  3. are helpful to an organism
  4. are harmful to an organism
Grade 9 DNA, RNA, and Genetics
A gene is a segment of DNA that controls the production of
  1. centromeres.
  2. microtubules.
  3. carbohydrates.
  4. protein molecules.
Grade 9 DNA, RNA, and Genetics
A mutation always results in a change in the
  1. trait.
  2. protein.
  3. DNA molecule.
  4. protein synthesis process.
Grade 9 DNA, RNA, and Genetics
In the ladder analogy of the DNA molecule, the "rungs" (steps) of the ladder are
  1. sugars.
  2. phosphates.
  3. paired nitrogenous bases.
  4. joined sugar and phosphate.
Grade 9 DNA, RNA, and Genetics
In eukaryotic cells, which of the following statements is true about DNA?
  1. It is located in the nucleus.
  2. It floats freely in the cytoplasm.
  3. It is located in the ribosomes.
  4. It is circular.
Previous Page 2 of 23 Next