Assume you were studying two characteristics of peas, and when you crossed heterozygous F1 individuals you did not see the 9:3:3:1 ratio predicted for a dihybrid cross. You later found that these two characteristics were on the same chromosome. With this information, how would you explain the results?

A. The results can be explained as polygenic inheritance.
B. There must have been a mutation.
C. The genes must be on the sex chromosomes.
D. The genes are linked and are inherited together.


D. The genes are linked and are inherited together.

Biology & Microbiology

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Indicate whether the statement is true or false.

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What organisms are responsible for harmful algal blooms?

a. Diatoms b. Coccolithophores c. Dinoflagellates d. Ciliates

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What is an area of the Earth's surface currently undergoing primary succession?

A. Shallow seas with low productivity B. Volcanoes in Iceland C. Redwood forests along the northwestern U.S. coast D. Old orange groves in Florida

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