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DNA, Chromosomes, and Replication

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1. Describe the process of crossing over and link that to the chromosomal basis of inheritance. Specifically, address the issues of chromosomes and the laws of segregation and independent assortment.

One aspect of life is the ability to replicate itself. DNA replication and the central dogma of molecular biology (DNA-RNA-protein).

2. Describe the basic structure of DNA. Be sure to include a discussion of the major components that make up a DNA molecule, and also the differences between DNA and RNA.
3. Describe the locations, reactants, and the products of transcription.
4. Describe the locations, reactants and products of translation.
5. Define mutation and describe the major types of mutations, possible causes of mutations, and potential consequences of a mutation event.

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1. Describe the process of crossing over and link that to the chromosomal basis of inheritance. Specifically, address the issues of chromosomes and the laws of segregation and independent assortment.

Crossing over is the process of chromatids making physical contact with each other and exchanging segments of genetic material. The law of segregation states that only one allele of a gene is inherited in an offspring. From a chromosome perspective, in meiosis, at one point, only one chromatid of a chromosome is implemented into a gamete cell, ensuring that only the allele of a gene is in one gamete. The crossing-over prior to this separation ensures that the chromatid is unlike the parent's chromatid for that chromosome, since genetic material has been exchanged between the chromatids.

The law of independent assortment states that different traits are coded on different genes, which are passed onto offspring independent of each other. For chromosomes, different traits of different genes are coded on different chromosomes, so one can imagine that the passing of a gene on chromosome 1 would likely occur independently of that of ...

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The following posting helps describe the process of crossing over and link that tho the chromosomal basis of reference and describes the basic structure of DNA.

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