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TLS Online TPP Program

#Question id: 12489

Achondroplasia shows autosomal dominant inheritance with complete penetrance. A man with achondroplasia has an unaffected partner of normal height. Their first two children are not affected. Which of the following is correct?

#Unit 8. Inheritance Biology
  1. The probability that their next child will be affected is 1 in 2.
  2. The probability that each of their children will be affected is less than 1 in 2 because the parents of the man with achondroplasia are not affected.
  3. The mother of these children has a sister with achondroplasia. This increases the risk that the children could be carriers.
  4. If their third child is unaffected, then the probability that their fourth child will be affected is 1 in 8.
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TLS Online TPP Program

#Question id: 27102

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the correct set of dihedral angle regarding γ-turns to avoid clashes
TLS Online TPP Program

#Question id: 23672

#Unit 13. Methods in Biology

Restriction fragment length polymorphisms are the result of ________.
TLS Online TPP Program

#Question id: 28672

#Unit 2. Cellular Organization

Which proteins is involved to inhibit Cdc25 phosphatase and hold it into inactive condition
TLS Online TPP Program

#Question id: 13182

#Unit 10. Ecological Principles

The MacArthur-Wilson equilibrium model of island biogeography predicts the number of species found on islands. The figure below depicts two volcanic islands located off a section of mainland coast.

The MacArthur-Wilson model predicts that the relative numbers of bird species on the mainland and two islands would be
TLS Online TPP Program

#Question id: 10385

#Unit 6. System Physiology – Plant

The leaves of many species are able to bend toward the sun during its progress across the sky, a phenomenon known as