When Mendel crossed two hybrid plants for stem height (Tt), what results did he always get?

1 answer:

3 0

When you cross two hybrids, the results always come in a 3:1 ratio as follows:

3 is the inheritance of at least 1 dominant allele
1 is the inheritance of two recessive alleles

Punnet Squares are very useful!
T t 
T | TT | Tt |
t | Tt | tt |

Three out of 4 boxes have offspring that express the dominant trait (tall plants) and 1 out of 4 boxes expresses only the recessive trait (short plants).

Hope this helps! :)

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According to the given information, the gene for the color of radishes exhibits incomplete dominance and the heterozygous genotype gives purple color to the radishes. The genotype of the heterozygous parent plant with purple radishes would be "RW". A cross between a purple radish (RW) and a white radish (WW) would give progeny in following ratio=

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