Dr. Ara B. Dopsis has an idea he thinks will be a boon to agriculture...

+1 vote

Dr. Ara B. Dopsis has an idea he thinks will be a boon to agriculture. He wants to create the “pomato,” a hybrid between a tomato (Lycopersicon esculentum) that has 12 chromosomes and a potato (Solanum tuberosum) that has 48 chromosomes. Dr. Dopsis is hoping that his new pomato will have tuber growth like a potato and the fruit production of a tomato. He joins a haploid gamete from each species to form a hybrid and then induces doubling of chromosome number.

Part A

How many chromosomes will be in each tomato gamete?

 

Part B

How many chromosomes will be in each potato gamete?

 

Part C

How many chromosomes will the hybrid have before chromosome doubling?

 

Part D

Will this hybrid (before inducing chromosome doubling - see chromosome number in part C) be infertile?

 

Part E

How many chromosomes will the polyploid have after chromosome doubling?

 

Part F

Can Dr. Dopsis be sure the polyploid will have the characteristics he wants?

asked Nov 23, 2012 in Genetics by GeneX ~Top Expert~ (7,947 points)
    

1 Answer

+2 votes

Part A

6 chromosomes

 

Part B

24 chromosomes

 

Part C

30 chromosomes

 

Part D

yes

 

Part E

60 chromosomes

 

Part F

No, the genetic interactions of tomato and potato genes in the same plant cannot be predicted.

answered Nov 23, 2012 by GeneX ~Top Expert~ (7,947 points)

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