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? asked in Science & MathematicsBiology · 1 decade ago

Can someone please answer this genetics question and show work (punnet square)? Thank you?

In tomatoes the gene for fruit shape has a dominant allele for round shape and a recessive allele for elongate shape. The gene for plant height is on a non-homologous chromosome and has a dominant allele for tall plants and a recessive allele for dwarf plants. A heterozygous tall plant with elongate fruits is pollinated with pollen from a dwarf plant heterozygous for round fruit. What are the expected F1 genotypes, phenotypes and their frequencies?

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  • 1 decade ago
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    Tall plant with long fruit = Ttrr

    Dwarf plant with round fruit = ttRr

    xx | Tr | Tr | tr | tr

    tR |TtRr|TtRr|ttRr|ttRr

    tR |TtRr|TtRr|ttRr|ttRr

    tr |Ttrr| Ttrr | ttrr |ttrr

    tr |Ttrr| Ttrr | ttrr |ttrr

    25% tall with round fruit

    25% dwarf with round fruit

    25% tall with elongated fruit

    25% dwarf with elongated fruit

  • 1 decade ago

    I love to help because I learned that stuff last year. But I totally forgot how to do it.

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