Vasa gene, Biology

Vasa are a maternal-effect gene whose product functions in development of the posterior end of the Drosophila embryo.  runt is a non-maternal-effect gene whose product functions in the formation of a normal segmentation pattern in Drosophila embryos.  Mutations in vasa and runt lead to embryonic lethality.

Several mother/embryo genotypes are listed below.  Next to each, indicate whether the embryo would have a wild-type appearance or would display the mutant phenotype (a defective posterior end or defective segmentation pattern).  Some of the embryo/mother combinations would not be expected - write not expected next to those, Wild-type or mutant or not expected?  

vasa:  vas/+ embryo from vas/+ mother      

vas/vas embryo from vas/+ mother      

+/+ embryo from vas/+ mother

vas/+ embryo from vas/vas mother      

vas/vas embryo from vas/vas mother     

+/+ embryo from vas/vas mother        

runt:  rnt/+ embryo from rnt/+ mother      

rnt/rnt embryo from rnt/+ mother      

+/+ embryo from rnt/+ mother        

rnt/+ embryo from rnt/rnt mother      

rnt/rnt embryo from rnt/rnt mother      

+/+ embryo from rnt/rnt mother

Posted Date: 2/27/2013 6:16:54 AM | Location : United States







Related Discussions:- Vasa gene, Assignment Help, Ask Question on Vasa gene, Get Answer, Expert's Help, Vasa gene Discussions

Write discussion on Vasa gene
Your posts are moderated
Related Questions
What are the advantages of rationale for menu planning? Can you list a few of these? Well planning in advance helps to determine quantities of different foods accurately. Food

Why is drosophila a convenient animal for the study of linked genes? The fruit fly drosophila is appropriate for the study of Genetics because it presents many distinct traits

Categories of Gifted Species This group of nitrogen fixers has been divided into three categories: Rhizobium which includes fast growing species, Bradyrhizobium which

Explain about the Deuteromycota - Fungi? Deuteromycota - Deuteromycetes or fungi imperfecti reproduce by means of conidia. These have either lost the capacity for sexual reprod

An impermeable membrane separates one liter of a 0.01 M glucose solution in water in the left compartment from one liter of a 0.1 M glucose solution in water in the right compartme

OLIGOSACCHARIDES They are small-sized polymers of monosaccharides having 2 - 6 simple sugars, occasionally upto 9 - 10. Oligosaccharides are soluble in water, sweet to t

Explain about the Demand curve or schedule in short. The demand curve or demand schedule shows the total quantity purchased through all buyers, within aggregate, into the marke

What is the difference between the alpha helix and the beta-sheet protein conformations? Ans) Alpha helix and beta-sheet conformations are the two major types of secondary struc

Why is the reaction of ethane and chlorine not a free-radical addition reaction? Because no free radicals are include in the reaction process only carbo cations and Cl- are evo

structure of centrosome and work