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The 23rd pair of chromosomes are the sex chromosomes. In female humans, both sex chromosomes are homologous, and characterized as XX. In male humans, one sex chromosome is an X chromosome and the other is a much smaller, nonhomologous Y chromosome, and is characterized as XY.

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Q: Why is the 23rd pair of chromosomes not always homologous?
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Is it true that in humans the are 23 pairs of matching homologous chromosomes called autosomes?

No, 22 pairs of chromosomes are autosomes. The last, or 23rd, pair are sex chromosomes.


Are homologous chromosomes present in both mitosis and meiosis?

Yes, homologous chromosomes are present in both mitosis and meiosis. In mitosis, homologous chromosomes do not pair up, while in meiosis, homologous chromosomes pair up during prophase I.


The two chromosomes in each matching pair in a karyotype are?

The two chromosomes in each matching pair in a karyotype are homologous chromosomes. These homologous chromosomes carry genes for the same traits at the same loci. One chromosome in the pair is inherited from the mother and the other from the father.


What is the name given to a pair of chromosomes that have matching locations for alternate forms of the same gene?

Homologous chromosomes.


What is another word for matching chromosomes?

Homologous is the word used to describe matching chromosomes, with a homolog being a pair of homologous chromosomes.


What is a pair of corresponding chromosomes called?

A pair of corresponding chromosomes is called homologous chromosomes. They are similar in size and carry genes that control the same traits. One chromosome in the pair is inherited from each parent.


How many chromosomes are in a homologous pair?

in a homologous chromosome there are two chromosomes ( a chromosome and a sister chromosome)


How do homologous chromosomes behave differently during mitosis and meiosis?

During mitosis, homologous chromosomes do not pair up and exchange genetic material, while in meiosis, homologous chromosomes pair up and undergo genetic recombination. This results in different behavior and outcomes for homologous chromosomes in the two processes.


Do homologous chromosomes pair in mitosis?

Homologous chromosomes do not pair in mitosis. Mitosis is the process of cell division where a cell duplicates its DNA and splits into two identical daughter cells, so the homologous chromosomes do not need to pair up like they do in meiosis.


How do homologous chromosomes pair up during mitosis?

During mitosis, homologous chromosomes do not pair up. Instead, they separate and move to opposite ends of the cell. Homologous chromosomes only pair up during meiosis, the process of cell division that produces gametes.


What is the cell with a pair of homologous chromosomes?

we call it diploid


What is a pair of homologous chromosomes?

two chromosomes that have the same length and same apperence.