1Which of the following is not a part of a DNA molecule?
a. Nitrogen base
b. Deoxyribose sugar
c. Phosphate group
d. Ribose sugar
d. Ribose sugar
2The sequence of nucleotides in mRNA is determined by the sequence of nucleotides in
DNA
3What would the complementary mRNA sequence be for the base sequence on the DNA template shown here?
G-G-T-A-G-T-A-A-G
C-C-A-U-C-A-U-U-C
4Identify the stage of mitosis represented by each picture and list the stages in proper order.
USE SEPARATE PAGE
5Translation occurs in the __________________ and transcription in the __________________.
cytoplasm; nucleus
6A cell’s DNA consists of 10 pairs of homologous chromosomes. What is the diploid (2n) number? What is the haploid (n) number?
diploid=(2n)=2*10=20; haploid=n=10
7Genetic recombination through crossing over of homologous chromosomes happens during which phase of meiosis?
It occurs between prophase 1 and metaphase 1 of meiosis.
8What molecules bring the amino acids to the ribosome during protein synthesis?
tRNA
9Which resembles mitosis the most: Meiosis I or Meiosis II?
Meiosis II
10Part of an mRNA strand is shown below.
A-U-G-G-A-U-A-U-A-U-A-A
a. What is the sequence of the DNA template?
b. What would the tRNA anticodons be?
c. Using the “secret” amino acid chart that I gave you in class decode the sequence of amino acids.
a. T-A-C-C-T-A-T-A-T-A-T-T
b. UAC-CUA-UAU-AUU
c.MET-ASP-ILE-STOP