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Lets review!. 1. What are chromosomes and why are they important to us?. Chromosomes are carriers of genetic material and are made up of DNA. 2 . What can gel electrophoresis tell you?. Kids parents because they share DNA.

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1. What are chromosomes and why are they important to us?

Chromosomes are carriers of genetic material and are made up of DNA


2. What can gel electrophoresis tell you?

Kids parents because they share DNA


4. We all have the same nucleotides(same basic ingredients) but why do we look different?

Because the nucleotides can be arranged, sequenced, differently


5. Shape of DNA.

Double helix

6. DNA is made up of subunits called _________.


7. What sugar does DNA contain?


8. Name the 4 DNA nitrogen bases.

A, T, C, G


9. DNA makes up carriers of genetic material called ____________.


10. The sequence of nucleotides in living organisms is called the ____________ information(code).


11. What are the sides of a DNA ladder composed of?

Alternating sugars and phosphates

12. A copy of DNA is made through a process known as __________.



13. A strand of nucleotides given is ACG TAG GCT. What is the complimentary DNA strand?


14. Why must DNA replicate itself during the first stages of mitosis and meiosis?

DNA must copy itself so when the parent cell divides into 2 new daughter cells, they will each have the same amount of DNA.


16. What is gene splicing?

Inserting a foreign gene

17. What is Genetic engineering?

Take a piece of DNA out of an organism and replace it with another piece of DNA

  • 18. What are the 3 ways DNA fingerprinting can be used?
  • Identify paternity
  • Identify or eliminate suspects
  • Identify deceased

19. Given the following base sequence- CGC AAT, how would the base sequence be coded on mRNA?


20 Identify the 3 parts of a RNA nucleotide.

Sugar, Phosphate, Nitrogen Base

21. Name the sugar in DNA and RNA.

DNA- deoxyribose

RNA- ribose


22. Name the 4 nitrogen bases in RNA.

A, U, C, G

23. What is the function of mRNA?

mRNA carries information from DNA out to the ribosomes so proteins can be made.

24. What is transcription?

The process of making DNA from RNA


25. What is the purpose of making RNA?

B/c DNA cannot leave the nucleus, RNA carries the code from the nucleus to the ribosome.

26. What is Translation?

The process of making(assembling amino acids) proteins with the information on mRNA.


28. Identify whether this is DNA or RNA

DNA b/c it has A, T, C, and G- DNA’s 4 nitrogen bases


29. What amino acid is coded for by the codon CAA?


30. A strand of mRNA containing the repeating sequence GCA UUC ACG would code for which of the following amino acid sequences?

Alanine, phenylalanine, threonine


31. How many amino acids are coded for in this DNA sequence?


3, 3 groups of codons

32. There are only 20 amino acids, get looking at the chart there are many types of proteins, why?

There are so many different possibilities the letters could be in


33. What is recombinant DNA?

Several types of DNA combined