Anthropology
Alexandra2421
A5_DNA.docxActivity 5: DNA
INTRODUCTION
When we’re talking about whole animals, like chimpanzees or gorillas, it’s easy to envision characteristics like hands, the way nostrils face, and so forth. But DNA isn’t visible to the naked eye. In this assignment, we’ll apply what you’ve learned about DNA and cells.
INSTRUCTIONS
1. Answer each of the questions below in the space provided.
QUESTIONS
Question 1: Mitosis and meiosis are two different processes for cell division. Read each question, then write the correct response under the column for mitosis and meiosis. (5 points each)
|
Question |
Mitosis |
Meiosis |
|
Which type of cell is dividing? Write gamete or somatic cell in the appropriate column. |
Type your answer here. |
Type your answer here. |
|
How many times does the parent cell divide? |
Type your answer here. |
Type your answer here. |
|
How many daughter cells result? |
Type your answer here. |
Type your answer here. |
|
Is each daughter cell an exact copy of the original cell? Or is the genetic material combined in a new way? Write “exact copy” or “recombination” in the appropriate column. |
Type your answer here. |
Type your answer here. |
|
What is the purpose of the cell division? Write “growth and repair of tissues” or “reproduction” in the appropriate column. |
Type your answer here. |
Type your answer here. |
Question 2: DNA consists of two strands of nucleotides, with matching base pairs. Below you see a single strand of DNA. Type the matching strand. (2 points per nucleotide)
A-G-C-A-A-T-C-C-G-T-G-A
Type the matching strand here.
Question 3: During protein synthesis, a strand of DNA acts as a template for mRNA. The mRNA then leaves the cell’s nucleus. In the cytoplasm (the area inside a cell but outside the nucleus), mRNA binds to a ribosome.
Look at the DNA template below. Type the mRNA bases below it. (2 points per nucleotide)
A-G-C-A-A-T-C-C-G-T
Type the mRNA strand here.
Question 4: The table below shows a strand of mRNA in the first row. Notice that the nucleotide bases are written in groups of three. These are called codons.
In the second row, type the name of the amino acid that is being coded for. Use the table in figure 3.25 of your textbook, located in chapter 3 in the section ‘transcription and translation’. (2 points each)
|
G-C-U |
C-A-A |
U-A-U |
|
Type the amino acid this codes for. |
Type the amino acid this codes for. |
Type the amino acid this codes for. |
You’re finished!
