The edges of each base pair are exposed in the major and minor grooves, creating a pattern of hydrogen-bond donors and acceptors and of hydrophobic groups (allowing for Vander Waals interactions) that identifies the base pair. The edge of an C : G base pair displays the following chemical groups in the following order in the major groove:

#Question id: 4771

#Unit 8. Inheritance Biology

The normal eye color of Drosophila is red, but strains in which all flies have brown eyes are available. Similarly, wings are normally long, but there are strains with short wings. A female from a pure line with brown eyes and short wings is crossed with a male from a normal pure line. The F1 consists of normal females and short-winged males. An F2 is then produced by intercrossing the F1. Both sexes of F2 flies show phenotypes as follows:

Are genes for eye color and wing length x link or autosome? 

#Question id: 4772

#Unit 8. Inheritance Biology

A black Labrador, Three phenotype of black, brown and yellow is control by non allelic gene interaction. Following some genotype

 The following conclusions were made

A. The 9:3:4 ratio obtained upon selfing of AaBb here indicates recessive epistasis

B. This is a recessive epistasis where homozygous bb is epistatic to A and a.

C. When Gene A and B incompletely link, It will be produced all phenotype black, brown and yellow upon selfing of AaBb

D. When Gene A and B incompletely link, test cross of AaBb will be produced all phenotype black, brown and yellow in ratio 1:1:2 respectively

Which of the following conclusions are correct?

#Question id: 4773

#Unit 8. Inheritance Biology

In Drosophila body color gene present on X chromosome but wing shape present on autosome.  Gray body color is dominant over yellow body color. Long wing is dominant over short wing.  Female is heterozygous for Gray body with long wing was cross with male that yellow body with short wing. Which of the following is correct approximate number of some phenotype of 400 offspring?

#Question id: 4774

#Unit 8. Inheritance Biology

Which of the following above cross showing one gene segregation?

#Question id: 4775

#Unit 8. Inheritance Biology

Which of the following is correct observe for above genetic cross? 

#Question id: 4776

#Unit 8. Inheritance Biology

True breeding agouti mice with genotype AABB were cross to true breeding albino mice with genotype aabb. All F1 offspring having agouti phenotype were allowed to intercross to produce F2 progeny as following 

                                 A- B -          agouti,

                                 aa B-            black

                                 --  bb            albino

Following genetic cross and there proportional?