Download Experience 2 Follow-up 1. Answer the following

Biol&160
Experience 2 Follow-up
Name: ________________________________________
1. Answer the following questions about this normal eukaryotic cell in the process of dividing:
What type of division is
shown here?
What phase of division is
shown here?
What is this ploidy of this
cell?
What is the n (haploid)
number of chromosomes?
What is the ploidy of the
resulting daughter cells?
How many total daughter
cells result from this type
of cell division?
Are there homologous
chromosomes in this cell?
Are there replicated
chromosomes in this cell?
Name the filamentous structures along which
chromosomes travel
(9)
2. List all the unique gametes that an organism with each of the following genotypes could form, assuming
crossing over DOES NOT takes place. Be sure to circle each gamete.
(6)
AB De
ab dE
EeQqnn
XE Y
XADXad FF
3. Please tell me the type of point mutation being described (be specific!) and describe the result of that
mutation on the amino acid sequence AND polypeptide that is made from the mutated DNA.
(6)
Mutation
Specific type of Mutation
Result
A “C” replaces a “T” at the
second position of a codon
A “C” is inserted into the
daughter DNA strand
A “G” replaces an “A” at the
third position of a codon
4. In snakes, color is determined by alleles at two unlinked genes. Gene R determines pigment color with R
(red) dominant over r (orange). Gene D then determines pigment deposition, and therefore color presence
or absence, with D (red or orange color) dominant over d (colorless). A red snake mates with a colorless
snake. Their F1 offspring appear in the ratio of 1 red: 1 orange. Determine the genotypes of parents and
offspring, link the phenotypes of offspring to their genotypes, and show all your work.
(7)
5. Complete the following chart.
Reaction
Reactants (substrates)
DNA replication
1. DNA molecule
2.
Transcription
Translation
Starch digestion
Hydrogen peroxide
digestion
1.
2. Ribonucleotides
1. mRNA
2.
1. H2O
2.
2 H2O2 molecules
Enzymes or Helper molecules
1.
2.
3. Ligase
RNA polymerase
(12)
Products
Two DNA molecules
1.
1. tRNA
2.
1.
1.
1.
1. H2O
2.
Maltose and Glucose
2. You find a purple-flowered, tall pea plant. The genes that code for plant height and flower color are
unlinked, the allele which produces purple color is completely dominant to the one which produces white,
and the allele which produces tall plants is completely dominant to the one which produces short.
(8)
a. List all the possible genotypes of this purple-flowered, tall plant.
b. List the phenotype and genotype of the plant you would cross the purple, tall plant with in order to
reveal its genotype.
c. Offspring of this cross appear in the following ratios: 1 purple, short: 1 purple, tall. Find the
unknown genotype of the parent using a Punnett square, and show your work.
14. An n=3, diploid organism’s genotype is AaBBDd; Draw a normal somatic (body) cell from this organism,
placing alleles of the A, B and D genes on their correct, unreplicated chromosomes.
(6)