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30. Which of the following is a result of crossing over during meiosis?
a. Genes are duplicated which ensures the offspring will be genetically identical to the parents
b. Genes are rearranged in such a way that offspring will contain genetic combinations different from
either parent
c. Portions of chromosomes are broken off, then reattach to the same chromosome
d. Portions of a gene are removed from a chromosome which results in a genetic disorder

Sagot :

GinnyAnsweridn

Final answer:

Crossing over in meiosis leads to genetic recombination and increased genetic diversity in offspring.


Explanation:

Crossing over during meiosis is the process where homologous chromosomes exchange segments of genetic material, leading to new combinations of genes on chromosomes different from the parent cell. This genetic recombination increases genetic variation in offspring.

During prophase I of meiosis I, homologous chromosomes pair up, and crossing over can occur, resulting in the exchange of DNA segments. This process allows for the creation of unique combinations of genes on chromosomes.

The swapping of genetic material during crossing over leads to the formation of recombinant chromosomes, contributing to genetic diversity in offspring compared to their parents.


Learn more about Genetic recombination in meiosis here:

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