Itis given in our meritnation chapter"Heridity and Evolution"under the category Mendel's principles,
Each characteristic in an organism has 2factors( that means each cell has 2 chromosomes, carrying the genefor the same character)
But tis is confusing, that does means we only have 23 cells(as each cell has 2 cromosomes) pls explain what this sentence means.
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The statement provided is correct. Let me explain you this in simple way.
This statement says that in a single cell only two chromosomes called homologous chromosomes contain genes or factors for same character. These factors of same gene are called alleles. This does not mean only two genes are present in a cell but means that in 23 pairs of chromosomes, each one pair of chromosome has the genes for same character. Let us take an example, of character height represented by two alleles of gene Tt. The one allele of height say T will be present on one chromosome and the other allele t will be present on its next pair (homologous chromosome). Thus, each two homologous pair of chromosomes in a cell contain genes or alleles for same character.
The statement provided is correct. Let me explain you this in simple way.
This statement says that in a single cell only two chromosomes called homologous chromosomes contain genes or factors for same character. These factors of same gene are called alleles. This does not mean only two genes are present in a cell but means that in 23 pairs of chromosomes, each one pair of chromosome has the genes for same character. Let us take an example, of character height represented by two alleles of gene Tt. The one allele of height say T will be present on one chromosome and the other allele t will be present on its next pair (homologous chromosome). Thus, each two homologous pair of chromosomes in a cell contain genes or alleles for same character.