Question

1. What is the independent variable of this experiment based on this graph? (SC.912.N.1.1)
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the length of the gummy bear before it was submerged
the different types of solutions used to submerge the gummy bears.
the length of the gummy bears after they were submerged in different liquids
the change in length over time
2. At what light intensity (approximately) do sun and shade plants have similar rates of photosynthesis? (SC.912.N.1.1)

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380 umol photons/m2/s
450 umol photons/m2/s
800 umol photons/m2/s
1000 umol photons/m2/s
3. Alleles for the A and B blood cell antigens are codominant. The condition where no antigens are present on the blood cells (type O blood) is a recessive trait. Which set of parents can most likely produce a child with type O blood? (SC.912.L.16.1)

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one parent with type AB blood, and the other parent with type A blood
one parent with type AB blood and the other parent with type O blood
one parent with heterozygous type A blood, and the other parent with type O blood
one parent with homozygous type A blood, and the other parent with homozygous type B blood
4. Hitchhiker's thumb (H) is dominant to no hitchhiker's thumb (h). A woman who does not have hitchhiker's thumb marries a man who is heterozygous for hitchhiker's thumb. What is the probable genotypic ratio of their children? (SC.912.L.16.1)

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0% Hh: 100% hh
50% Hh: 50% hh
75% Hh: 25% hh
100% Hh: 0% hh
5. This diagram shows a pedigree for a recessive genetic disorder. What is the genotype of individual 6? (SC.912.L.16.1)

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A.

B.

C.

D.
6. This diagram shows a diploid cell with two pairs of homologous chromosomes. Due to independent assortment, what is the possible genetic make-up of gametes produced by this organism? (SC.912.L.16.1)

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SsTt
Ss, Tt
S, s, T, t
ST, St, sT, st
7. Which choice describes DNA after replication has taken place? (SC.912.L.16.3)

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one molecule with two original strands and one molecule with two new strands
two molecules, each with one original and one new strand
two molecules, each with two new strands
two molecules, each with two old strands
8. Four different segments of a DNA molecule are represented below.

Which DNA Segment contains an error? (SC.912.L.16.3)

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Segment 1 only
Segment 3 only
Segments 2 and 3
Segments 2 and 4
9. During transcription the DNA base sequence is transcribed into a complimentary mRNA sequence. A codon table like the one shown below lists the amino acids coded for by particular triads of mRNA bases. A segment of DNA has undergone a mutation in which one nucleotide has been changed. The original sequence was ACG and the new sequence is ACA. Use the codon table to determine whether or not this mutation will cause a change in the phenotype of the organism.
(SC.912.L.16.3)
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Yes, the phenotype of the organism would change because a new amino acid will be coded for.
Yes, the phenotype of the organism would change because any change in the DNA sequence will cause a change in phenotype.
Even though the DNA sequence changed, the sequence still codes for the same amino acid, so no change in phenotype will occur.
It is impossible to determine if a change in phenotype will occur using only the DNA sequence.
10. A diagram of a cellular process is shown below. Which of the following identifies the process shown at point Z? (SC.912.L.16.3)

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Translation
Translocation
Replication
Transcription

Answer 1

Here are the answers I can determine from the information given. For questions 5 and 8 I need the pedigree/DNA images to be sure — please upload them or type the sequences/labels.

1. Independent variable = the different types of solutions used to submerge the gummy bears.

2. Approximately 450 µmol photons/m2/s.

3. one parent with heterozygous type A blood, and the other parent with type O blood.

4. 50% Hh : 50% hh.

5. I can’t determine without the pedigree image. (General tip: for a recessive disorder, affected individuals are homozygous recessive; any unaffected parent of an affected child must be a carrier — use parents/offspring to infer whether individual 6 is a carrier or homozygous dominant.)

6. Possible gametes = ST, St, sT, st.

7. two molecules, each with one original and one new strand. (semiconservative replication)

8. I can’t determine which segment contains an error without seeing the four DNA segments. (Tip: look for incorrect base pairing — A pairs with T, C pairs with G.)

9. Even though the DNA sequence changed, the sequence still codes for the same amino acid, so no change in phenotype will occur. (ACG → ACA are both codons for the same amino acid.)

10. Translation.