Answer :
Prophase I, choice C. 4 copies, one on each sister chromatid in a pair of homologous chromosomes.
The useful and physical unit of heredity handed from figure to offspring. Genes are pieces of DNA, and the most genes contain the information for making a particular protein.
A gene is the simple physical and beneficial unit of heredity. Genes are made from DNA. a few genes act as commands to make molecules called proteins. however, many genes do no longer code for proteins. In people, genes vary in size from a few hundred DNA bases to greater than 2 million bases.
Prophase 1 is essentially the crossing over and recombination of genetic fabric among nonsister chromatids - this effects within the genetically unidentical, haploid daughter chromatid cells.
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Disclaimer:- your question is incomplete, please see below for the complete question.
a) eight copies, one on each sister chromatid in a pair of homologous chromosomes
b) two copies, one on each homologous chromosome
c) four copies, one on each sister chromatid in a pair of homologous chromosomes
d) eight copies, one on each strand of each chromatid per homologous pair