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TLS Online TPP Program

#Question id: 4959

If a fossil is encased in a stratum of sedimentary rock without any strata of igneous rock (e.g., lava, volcanic ash) nearby, then it should be

#SCPH28 | Zoology

  1. easy to determine the absolute age of the fossil, because the radioisotopes in the sediments will not have been ʺresetʺ by the heat of the igneous rocks.

  2. easy to determine the absolute age of the fossil, because the igneous rocks will not have physically obstructed the deposition of sediment of a single age next to the fossil.

  3. difficult to determine the absolute age of the fossil, because the ʺmarker fossilsʺ common to igneous rock will be absent.

  4. difficult to determine the absolute age of the fossil, because radiometric dating of sedimentary rock is less accurate than that of igneous rock.

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TLS Online TPP Program

#Question id: 15195

#SCPH28 | Zoology

In the following pedigree shows the segregation of two different recessive traits.
Assuming that both traits are due to linked autosomal genes that are 10 cM apart, calculate the probability that the indicated child will have both recessive traits.
TLS Online TPP Program

#Question id: 15196

#SCPH06 I Botany

In the following pedigree shows the segregation of two different recessive traits.
Derive a general equation relating the probability that the child will have both traits expressed as a function of the distance between the markers in cM.
TLS Online TPP Program

#Question id: 15196

#SCPH28 | Zoology

In the following pedigree shows the segregation of two different recessive traits.
Derive a general equation relating the probability that the child will have both traits expressed as a function of the distance between the markers in cM.
TLS Online TPP Program

#Question id: 15197

#SCPH06 I Botany

In the following pedigree shows the segregation of two different recessive traits.

Assuming that both traits are 10 cM apart on the X chromosome, what is the probability that a male child will have both recessive traits?
TLS Online TPP Program

#Question id: 15197

#SCPH28 | Zoology

In the following pedigree shows the segregation of two different recessive traits.

Assuming that both traits are 10 cM apart on the X chromosome, what is the probability that a male child will have both recessive traits?
TLS Online TPP Program

#Question id: 15198

#SCPH06 I Botany

In the following pedigree shows the segregation of two different recessive traits.
Assuming that both traits are 10 cM apart on the X chromosome, what is the probability that a female child will have both recessive traits?