BIOLOGY 1A03 Study Guide - Final Guide: Homologous Chromosome, Sister Chromatids, Synaptonemal Complex

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BIOLOGY 1A03 Full Course Notes
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BIOLOGY 1A03 Full Course Notes
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In females, the production of gametes leads to the production of 1 large egg cell (with a higher cytoplasmic volume) and 3 non-gametic polar bodies which reduce the chromosomal content of them 1 egg gamete. If human gametes were produced by mitosis, they would be diploid and make offspring with double the chromosome # leading to fatal effects in the baby. Prophase i condensation and synapsis: each sexually reproducing organism has a characteristic diploid and haploid , meiosis reduces the chromosome # in gametes & recombines parental homologous chromosomes. If the blended model of inheritance were correct, the f1 offspring would produced offspring with a seed colour average between yellow and green (lime green: mendel"s 1st generation cross gave evidence against the blended model of inheritance. In contrast, if an organism is true-breeding, then the allele will be found in all gametes.

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