Which positions in the purine ring of a purine nucleotide in DNA have the potential to form hydrogen bonds but are not involved in Watson-Crick base pairing?

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#Question id: 957

#Unit 1. Molecules and their Interaction Relevant to Biology

Which is not produced from the degradation of branched-chain amino acids?

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#Question id: 23777

#Unit 7. System Physiology – Animal

The area over the optic disk, which lacks the visual receptors, is known as  

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#Question id: 28206

#Unit 5. Developmental Biology

Genetic specificity of induction response is an___

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#Question id: 10265

#Unit 8. Inheritance Biology

The alternate form of a gene is

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#Question id: 12509

#Unit 8. Inheritance Biology

In this pedigree I 1 and II 2 have Becker muscular dystrophy which shows X-linked recessive inheritance. III 2 has oculocutaneous albinism which shows autosomal recessive inheritance with an incidence in the general population of 1 in 10 000. The disease status for both Becker muscular dystrophy and oculocutaneous albinism is unknown for IV 1 and IV 2.

What is the probability that IV 1 is a carrier of oculocutaneous albinism?