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Biology, 16.02.2021 14:50 myanniespencer39

23. In tomatoes, the red color or the fruit and the round shape other and determined by the dominant autosomal genes. A plant with red round fruits intersects
with a plant with yellow oval fruits. The offspring has the following distribution of
159 - red round
163 - yellow oval
2125 - red oval
2123 - yellow round
Explain the distribution of traits in the offspring. Determine the genotypes, the
phenotypes of offspring and parents. Find the distance between the genes of the form
and the color of the fruit.

24. A wild-type fruit fly (heterozygous for gray body color and normal
wings) is mated with a black fly with vestigial wings. The offspring have the
following phenotypic distribution
wild-type, 778
black-vestigial, 785
black-normal, 158
grayvestigial, 102
What is the recombination frequency between these genes for body color and
wing size?

25. Determine the sequence of genes along a chromosome based on the
following recombination frequencies:
A-B, S map units: A-C, 28 map units; A-D. 25 map units, B-C. 20 map units
B-D, 33 map units

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