True breeding brown dogs with genotype aabb were cross to true breeding white dogs with genotype AABB. All F1 offspring having white phenotype were allowed to intercross to produce F2 progeny as following number –

A- - - 118 white,

aa B- 32 black

aa bb 10 brown

A Male Dog with AaBb genotype was cross with female dog with aabb genotype. What is probability of Black phenotype among their offspring if A gene link B gene at 10 map unit at cis configuration?

#Question id: 3891

#Unit 3. Fundamental Processes

Protein amino acid side chains can hydrogen bond in the major groove of DNA, and discriminate between each of the four possible base pairs.  In which one of the following groups of amino acids can all three members potentially be used in such DNA-protein recognition?

#Question id: 3417

#Unit 11. Evolution and Behavior

In balancing selection, two or more alleles are kept in balance, and therefore are maintained in a population over the course of many generations. Which of the following example can support balancing natural selection?

A- Sickle cell allele kept in balance because heterozygotes have greater chance of survival if infected by the malarial parasite, compared with normal homozygotes

B. One morph has selective advantage over another morph

C. One homozygote has greater chance of survival than other genotype results in purity of population

D. many species of invertebrates exist as different colored forms, identical in all respects except color. Visually searching predators often develop a search image for one color form, usually the commoner

#Question id: 27481

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is the examples of Epimers?

#Question id: 5755

#Unit 8. Inheritance Biology

A researcher studying bacterial toxin predicts that a lysine within the toxin is important for binding it’s target cell.  She used site-directed mutagenesis to change a codon for lysine (AAA) to one for asparagine (AAU).  However, the mutant toxin still binds to its target cell just as well as the wild-type toxin bound and appears to have no other changes. This type of mutation is probably

#Question id: 11037

#Unit 7. System Physiology – Animal

A 22-year-old man has a muscle blood flow of 250 ml/min and a hematocrit of 50. He has a mean arterial pressure of 130 mm Hg, a muscle venous pressure of 5 mm Hg, and a heart rate of 80 beats/min. Which of the following is the approximate vascular resistance in the muscle of this man?