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#Question id: 676


What would you expect about the formation of an α-helix for a segment of a protein chain that contains lysine approximately every fourth residue with all other residues being mostly hydrophobic?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. Helix formation would be favored at low pH.

  2. Helix formation would be favored at high pH.

  3. Helix formation would never occur regardless of pH.

  4. Helix formation would be favored at neutral pH.

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TLS Online TPP Program

#Question id: 3525

#Unit 8. Inheritance Biology

In a plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant over shortness (t). If a plant with RRTt genotype was crossed with rrtt plant results progeny, are

TLS Online TPP Program

#Question id: 3526

#Unit 8. Inheritance Biology

In garden peas, the allele for tall plants (D) is completely dominant to the allele for dwarf plants (d) and the allele for violet flower color (W) is completely dominant to the allele for white flower color (w). In a cross between a tall violet plant, with the genotype DDWw, and a dwarf white plant, what phenotypic ratio of the progeny would be expected from this cross?

TLS Online TPP Program

#Question id: 3527

#Unit 8. Inheritance Biology

Which of the following genetic cross would produce 1/4 yellow round, 1/4 yellow wrinkle, 1/4 Green round and ¼ Green Wrinkle seeded plant?

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#Question id: 3528

#Unit 8. Inheritance Biology

Consider the following cross:

A/a ; B/b ; C/c ; D/d ; E/e  X a/a ; B/b ; c/c ; D/d ; e/e

What proportion of progeny will phenotypically resemble the first parent?

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#Question id: 3529

#Unit 8. Inheritance Biology

Mendel crossed tall and round seeded pea plants with dwarf and wrinkle seeded pea. The F1 plants were all tall and round seed. What is the probability of tall plant with wrinkle seed in F2 generation?

TLS Online TPP Program

#Question id: 3530

#Unit 8. Inheritance Biology

Mendel’s law of segregation, as applied to the behavior of chromosomes in meiosis, means that: