Your friends Ben and Jane are contemplating having children and seek your genetic counsel. Ben and Jane are unrelated, but both have younger brothers with the same, extremely rare genetic trait. (In fact, Ben and Jane met at a support group meeting for children and families of children with this rare disorder.) Ben’s parents and Jane’s parents are all unaffected.          

Assume that the trait is autosomal dominant with 80% penetrance in heterozygotes and 100% penetrance in homozygotes. If not affected, what is the probability that the child is a carrier?

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#Question id: 13023

#SCPH06 I Botany

Which of the following enzymes are required for end labelling?

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#Question id: 363

#I Life Science/ Life Sciences Group – I-V

What is the pH of a mixture of 0.042 M NaH2PO4 and 0.058 M Na2HPO4? If 1.0 mL of 10.0 M NaOH is added to a liter of the buffer prepared, how much will the pH change? (pKa = 6.86)

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#Question id: 16003

#SCPH05 I Biotechnology

When dissolved oxygen is lower than the critical concentration, viable cell concentration declines because of

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#Question id: 19647

#SCPH05 I Biotechnology

Which of the following participate in the sulphonation of benzene?

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#Question id: 12932

#SCPH06 I Botany

Why mRNA cannot be used directly in cloning?