If all the plants in the first generation have yellow flowers with round petals, this indicates that yellow is dominant over white and round is dominant over pointed. Therefore, all the plants in the f1 generation are heterozygous (YyRr).
When these plants self-fertilize, there is a possibility of 9 different genotypes from the combination of alleles: YYRR, YYRr, YyRR, YyRr, Yyrr, yyRR, yyRr, yyrr. However, only the genotypes YYRR, YYRr, YyRR, and YyRr will result in yellow flowers with round petals.
Therefore, 2 out of the 4 possible genotypes will result in yellow flowers with round petals in the next generation.
A true breeding white flower with round petals is crossed with a true brreding yelow flower with pointed petals in f1 all of the have yellow flowers with round petals if the plants in the first generation self fertilize how many in the next generation will have yellow flowers with round petals
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