Biology, 26.02.2020 05:48 Gabzer8524
In cucumbers, dull fruit (D) is dominant over glossy fruit (d), orange fruit (R) is dominant over cream fruit (r), and bitter cotyledons (B) are dominant over non-bitter cotyledons (b). The three characters are encoded by genes located on different pairs of chromosomes. A plant homozygous for dull, orange fruit and bitter cotyledons is crossed with a plant that has glossy, cream fruit and non-bitter cotyledons. The F1 are intercrossed to produce the F2 .
a. Give the phenotypes and their expected proportions in the F2 .
b. An F1 plant is crossed with a plant that has glossy, cream fruit and nonbitter cotyledons. Give the phenotypes and expected proportions among the progeny of this cross.
Answers: 3
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In cucumbers, dull fruit (D) is dominant over glossy fruit (d), orange fruit (R) is dominant over cr...
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