Retinoblastoma usually occurs as a sporadic event but in around 10% of cases there is a positive family history due to autosomal dominant inheritance. In these families the penetrance is approximately 80% (= 0.8). A woman with retinoblastoma, whose father and grandfather were also affected, has an unaffected partner with no relevant family history. Which of the following is correct regarding their children?

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#Question id: 15197

#Unit 8. Inheritance Biology

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

#Unit 8. Inheritance Biology

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?

TLS Online TPP Program

#Question id: 7696

#Unit 9. Diversity of Life Forms

The following question refers to the following phylogenetic trees. Which tree depicts the microsporidians as a sister group of the ascomycetes?

TLS Online TPP Program

#Question id: 7697

#Unit 9. Diversity of Life Forms

The following question refers to the following phylogenetic trees. Which tree depicts the closest relationship between zygomycetes and chytrids?

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#Question id: 7698

#Unit 9. Diversity of Life Forms

Which tree shows the greatest evolutionary distance between chytrids and ascomycetes?

TLS Online TPP Program

#Question id: 7699

#Unit 9. Diversity of Life Forms

In the phylogenetic trees, numbers represent species, and the same species are shown in both trees. Which two species are represented as sister species in Tree 2 but are not shown as sister species in Tree 1?