Question

THE The University of Goroka Division of Biological Sciences - Semester Two, 2021 BI 141: Assignment 2 CORO Units to read: Classical Genetics & Ecology Week issued: Week 5- Friday Total: /25 Due week: Week 9- Friday Question 1 Gregor Mendel followed the characters of seed color and seed shape through the F1 generation. He crossed a true-breeding plant with yellow-round seeds with a true-breeding plant with green-wrinkled seeds, producing dihybrid F1 plants, Self-pollination of the F1 dihybrids produced the F2 generation, Use the law of independent and dependent assortment to predict different phenotypic ratios. a. What would be phenotypic ratio for dependent assortment? (2 marks) b. What would be phenotypic ratio for independent assortment? (3 marks)​

Answer 1

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1 > It locates a place on globe by making grids. 2 > It tells us about the climatic conditions of a place. 3 > It divides the whole earth in small parts. 8 > It provides a way for specifying how east/west or north/south an object is

Answer 2

Answer:

When a dihybrid cross is conducted, dependent assortment predicts offspring with a phenotypic ratio of 3 purple-flower/yellow-seed: 1 white-flower/green-seed. ... Alternatively, independent assortment predicts alleles for different phenotypes are sorted into gametes independently from one another.

Explanation:

Mendel's principle of independent assortment predicts that the alleles of the two genes will be independently distributed into gametes. ... This 9:3:3:1 phenotypic ratio is the classic Mendelian ratio for a dihybrid cross in which the alleles of two different genes assort independently into gametes.

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