Multiple Choice
Sister chromatids are held together at the:
2
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3. Extensions to Mendelian Inheritance
Understanding Independent Assortment
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Syntenic genes can assort independently when ________.
A
they are on different chromosomes
B
they are located close together on the same chromosome
C
they are far apart on the same chromosome and crossing over occurs between them
D
there is no crossing over during meiosis
Verified step by step guidance1
Understand the definition of syntenic genes: these are genes located on the same chromosome.
Recall that independent assortment typically occurs when genes are on different chromosomes, due to the random segregation of chromosomes during meiosis.
Recognize that syntenic genes can still assort independently if crossing over (genetic recombination) occurs between them during meiosis.
Note that the likelihood of crossing over depends on the physical distance between the genes; genes far apart on the same chromosome have a higher chance of recombination.
Conclude that syntenic genes assort independently when they are far apart on the same chromosome and crossing over occurs between them.
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