Answer to Question #161300 in Organic Chemistry for Nawid Sayed

Question

Hi, Please help me this question, especially with last two parts.

Thanks in Advance

In tomatoes, red fruit is dominant to yellow fruit and hairy stems are dominant to hairless (smooth) stems. The two genes controlling these traits are inherited in normal Mendelian fashion and are not linked.

a)     Produce a suitable key for this information in terms of the individual alleles of the genes given.                                                                                     

b)     What are the possible genotypes of plants showing the following forms:    

                                                                                                           

i)                   Red fruit and smooth stems :  

ii)                 Yellow fruit and hairy stems :     

iii)               Red fruit and hairy stems

Write detail please for Part C and D

        

c)       On crossing a plant with red fruit and hairy stem, with one that was yellow fruit and hairy stem, the following progeny were obtained:     

           30 red, hairy / 11 red, smooth / 29 yellow, hairy / 9 yellow, smooth    

d)     Give a reasoned explanation along with the use of full genetic diagrams to proof your answer, to explain these results in terms of the simultaneous transmission of characteristics.

Answer 1

specific stereoisomer (e.g single enantiomer) is formed, select that isomer only. If a mixture of stereoisomers (e.g. racemic or diastereomers) is formed, select the single structure that shows the appropriate mixture (e.g. lines not dashes). If we used the reagent NaOH, H2O. The major product is compound F by a(n) E2 mechanism. On first inspection, compound E appears incorrectly to be the major product, but it is prevented by difficulty getting into the Antiperiplanar transition state. If we want this compound we'd have to start with the (pick one: cis, trans) diastereomer of the original starting material. If we convert the reagent to pure H2O.