How can the chromosomes be identical?

Since homologous chromosomes are not identical and do not originate from the same organism, they are different from sister chromatids. Sister chromatids result after DNA replication has occurred, and thus are identical, side-by-side duplicates of each other.

Why are the two new chromosomes identical?

Mitosis creates two identical daughter cells that each contain the same number of chromosomes as their parent cell. … Specifically, meiosis creates new combinations of genetic material in each of the four daughter cells. These new combinations result from the exchange of DNA between paired chromosomes.

Are chromosomes unique or identical?

Meiosis II results in four haploid daughter cells, each with the same number of chromosomes. However, each chromosome is unique and contains a mix of genetic information from the maternal and paternal chromosomes in the original parent cell.

What are chromosomes made of?

Chromosomes are made up of a DNA-protein complex called chromatin that is organized into subunits called nucleosomes.

Is chromatin made of DNA?

Chromatin is a complex of DNA and proteins that forms chromosomes within the nucleus of eukaryotic cells. Each nucleosome is composed of DNA wrapped around eight proteins called histones. …

How many genes are in a chromosome?

Chromosome 1 likely contains 2,000 to 2,100 genes that provide instructions for making proteins.

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