What occurs during leptotene of prophase I?
A. The homologous chromosomes recognize one another by synapsis.
B. Crossing over occurs.
C. The replicated chromosomes condense.
D. The synaptonemal complex dissociates.
E. None of the answers are correct.
C
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a. digestive; circulatory b. digestive; reproductive c. digestive; respiratory d. circulatory; respiratory e. respiratory; reproductive
A genealogical species definition includes fewer organisms than a biological species definition
Indicate whether the statement is true or false
Lethal mutations can be recovered in bacteria if they are ________.
A. active B. conditional C. dominant D. None of the choices are correct.
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Answer the following statement true (T) or false (F)