Biosynthesis of all N-linked oligosaccharides begins in the rough ER with a preformed branched oligosaccharide precursor Glc3Man9(GlcNAc)2, Which of the following statements is incorrect about these biosynthesis?

a) the oligosaccharide precursor is assembled on a membrane- attached anchor called dolichol phosphate

b) First sugar residue is attached to dolichol by a glycosidic bonds & the other

sugars are added by high-energy pyrophosphate

c) Two N- acetylglucosamine (GlcNAc) and five mannose residues are added one at a time to a dolichol phosphate on the lumen

d) Four mannose and three glucose  residue are added one to a dolichol phosphate on the luminal side

#Question id: 4744

#Unit 8. Inheritance Biology

Assume that long ear lobes in humans are an autosomal dominant trait that exhibits 50% penetrance. A person who is heterozygous for long ear lobes mates with a person who is homozygous for normal ear lobes. What is the probability that their first child will have long ear lobes.

#Question id: 4745

#Unit 8. Inheritance Biology

In some goats, the presence of horns is produced by an autosomal gene that is dominant in males and recessive in females. A horned female is crossed with a hornless male. The F1 offspring are intercrossed to produce the F2. What proportion of the F2 offspring will have horns?

#Question id: 4746

#Unit 8. Inheritance Biology

Two independent pure line varieties having deep red and brown phenotype in their seed coat were cross, the all f1 progeny is deep red. The F2 progeny obtain from selfing show deep red and brown in ratio of 15:1. Which of the following observation is correct?

#Question id: 4747

#Unit 8. Inheritance Biology

How does incomplete dominance differ from incomplete penetrance?

#Question id: 4748

#Unit 8. Inheritance Biology

Eye color in Drosophila present on X chromosome, Red eye color is dominant over white eye color. There is non disjunction in Meiosis I in female and normal meiosis in male. Female is white eye color was cross with red eye male. What will be expected phenotype in their progeny?

#Question id: 4749

#Unit 8. Inheritance Biology

A normal woman, whose father was Hemophilic and color blind is married to a colorblind, nonhemophilic man. What will be probability of colorblind, hemophilic daughter?