LABORATORY REVIEW
MITOSIS AND MEIOSIS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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homologous chromosomes
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interphase
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DNA
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mitosis
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Detailed explanation-1: -Homologous chromosomes are the chromosomes which contain alleles for the same type of genes (one from sperm and one from egg) or can be called similar. Homologous chromosomes are similiar but not identical. Each carries the same genes in the same order, but the alleles for each trait may not be the same.
Detailed explanation-2: -Homologous chromosomes are chromosomes that share: The same structural features (e.g. same size, same banding patterns, same centromere positions) The same genes at the same loci positions (while the genes are the same, alleles may be different)
Detailed explanation-3: -sister chromatids. At meiosis, each of the homologous chromosomes is comprised of two identical chromatids joined together by a common kinetochore (centromere). The identical chromatids are specifically called sister chromatids to distinguish them from the so-called non-sister chromatids.
Detailed explanation-4: -The two chromosomes in a homologous pair are very similar to one another and have the same size and shape. Most importantly, they carry the same type of genetic information: that is, they have the same genes in the same locations.
Detailed explanation-5: -Humans have 23 chromosome pairs, or 46 chromosomes in all. Homologous chromosomes have the same genes arranged in the same order, but they have slightly different DNA sequences. Different versions of the same gene are called alleles (uh-LEELZ); homologous chromosomes often contain different alleles.