In soybeans, dwarf (D) is dominant to tall (d), round (R) is dominant to oval (r

Question

In soybeans, dwarf (D) is dominant to tall (d), round (R) is dominant to oval (r), and green (G) is dominant to brown (g). The genes are linked and the map is given below. Pure-breeding tall, oval, green plants were mated to pure-breeding dwarf, round, brown plants. The F1 were testcrossed. All loci are autosomal. The coefficient of coincidence is 1.

In soybeans, dwarf (D) is dominant to tall (d), round (R) is dominant to oval (r), and green (G) is dominant to brown (g). The genes are linked and the map is given below. Pure-breeding tall, oval, green plants were mated to pure-breeding dwarf, round, brown plants. The F1 were testcrossed. All loci are autosomal. The coefficient of coincidence is 1 Height Shape Color 14cM 22cM Rank the progeny phenotypes below to indicate their frequency in the testcross progeny based on the data above. Use 1 to indicate the most frequent then 2, then 3 and let 4 indicate the least frequent. tall, oval, green tall, round, green Choose... tall, round, brown Choose. tall, oval, brown Choose..

Explanation / Answer

According to the Mendelian's law, the frequency of the test cross progeny should be

tall, oval,brown : 9

tall, round, brown : 3

tall, oval, green : 3

tall, round, green : 1

Hope this answers your question.

All the best!

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