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Chromosomes ((What is a Gene?, Section of DNA that corresponds to a…
Chromosomes
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- Section of DNA that corresponds to a discrete unit of heredity
- Generally genes are information needed to make specific polypeptide
- Proteins that are single polypeptide are usually associated with a single gene
- Proteins that consist of multiple polypeptides are associated with multiple genes
- Passed to new generation in sperm and eggs cells
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- Located in cell's nucleus
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- Sperm cell fuses with egg cell
- After fertilization, a zygote is formed
- Nucleus of sperm cell injects into egg cell
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- Chromosomes contain genetic material
- Each reproductive cell contains one copy of each 23 chromosomes
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- Chromosomes contain code for how to male specific proteins
- Specific instructions for a protein are on sections of chromosome called genes
Chromosomes and Sickle Cell
- Chromosome 11 carries the instructions to make the hemoglobin protein
- There are different versions of these genes:
- normal
- healthy
- mutated
- sickle
- other
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