Rank the progeny phenotypes below to indicate their frequency in the testcross p

Question

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, round, brown

tall, round, green

tall, oval, green

tall, oval, brown

tall, round, brown

tall, round, green

tall, oval, green

tall, oval, brown

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, round, green plants were mated to pure-breeding dwarf, oval, brown plants The F1 were testcrossed. All loci are autosomal. The coefficient of coincidence is Height Shape ttolor 14cM 22cM the most frequent then 2, then 3 and let 4 indicate the least frequent.

Explanation / Answer

dRG x Drg mating takes place to form the F1 generation

Tall, round, brown

1

Tall, round, green

2

Tall, oval, green

4

Tall, oval brown

3

Tall, round, brown

1

Tall, round, green

2

Tall, oval, green

4

Tall, oval brown

3

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