The following are the recombination frequencies for a set of genes found on the same chromosome: X-W 7% W-Y 10% X-Z 13% W-Z 20% X-Y 17% What is the correct order for these genes using a linkage map analysis? Between which two genes is crossing over most likely to occur?

Options have not been provided for the question. They are as follows:

What is the correct order for these genes using a linkage map analysis?  

A. Z-X-Y-W

B. X-W-Z-Y

C. W-X-Y-Z

D. Y-W-Z-X

E. Z-X-W-Y

F. Y-X-W-Z

Between which two genes is crossing over most likely to occur?

A. B and D

B.X and Z

C. X and W

D. X and Y

E. W and Z

F. Y and W

G.Y and Z

Correct order for these genes using a linkage map analysis: E. Z-X-W-Y

Two genes between which the crossover is most likely to occur: G.Y and Z

Explanation:

According to linkage concept, recombination frequency between two genes = distance between two genes in cM

Here, smallest distance is between X and W ( 7cM ) so they are present next to each other. Distance between X and Y is 17cM and between W and Y is 10cM so W is present between X and Y. Distance between X and Z is 13 cM. Since on one side of X, W and Y are already present Z lies on the other side. So, the final gene order comes out to be, Z-X-W-Y.

According to the gene order, Y and Z genes are farthest from each other. Chances of crossover or recombination increases with increasing distance between genes. So, Y and Z have the highest probability to show crossing over.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.