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Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit ( r ).

Tomato Plants 

In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants with red and round fruit (FFRR) were crossed to pure breeding plants with yellow and oval fruit (ffrr). 


The red and round F1 progeny were then testcrossed to plants that were homozygous recessive for both genes (ffrr) with the following results: 


Phenotypes 

Number of Offspring 

Red and round 

2 255 

Red and oval 

290 

Yellow and round 

310 

Yellow and oval 

2 145 




Use a Punnett square to determine the expected testcross progeny on the basis of Mendel's Law of Independent Assortment.


a.Record the phenotypes and the phenotype ratio in lowest terms.

Top Answer

The cross phenotypic ratio is 4:4:4:4. The... View the full answer

404 cross.PNG

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Other Answers

F_R_ = Red and round fruits= 1/4 F_rr = red and oval fruits... View the full answer

The phenotypic ratio of the progenies obtained in F2 generation is 4:4:4:4 i.e. 1:1:1:1... View the full answer

1.png

GAMHES ——I'__ IRED D HDDND IRED D DUAL IUELLDUU [TELIDW LIDWE: DUAL
FRUIT: FRUIT: ROUND FRUIT] FRUIT: 155E:
[FEED {A HDDND [FEED a DUAL IUELLDUU 3: IUEDDUU 3: DUAL FRUIT] FRUIT] ROUND FRUIT]...

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