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Connect! Why sometimes do we see albino animals? What causes albinism?

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Presentation on theme: "Connect! Why sometimes do we see albino animals? What causes albinism?"— Presentation transcript:

1 Connect! Why sometimes do we see albino animals? What causes albinism?

2 2. GENE MUTATIONS are random changes in the chemical nature of genetic material (DNA); smaller sections of the DNA are changed compared to chromosomal mutations are random changes in the chemical nature of genetic material (DNA); smaller sections of the DNA are changed compared to chromosomal mutations

3 Sometimes the effects of a gene mutation are obvious such as albinism while other mutations are not as noticeable. Usually mutations are recessive and harmful

4 Gene mutations can be an insertion (extra gene), a substitution (different gene), or a deletion (missing gene). Also possible are duplication and inversion.

5 Ask lynn where she got gene 1 and 2 deletion diagram, insert here

6 3. MUTAGENIC AGENTS cause an increase in mutations (even though mutations can occur spontaneously) cause an increase in mutations (even though mutations can occur spontaneously)RadiationX-rays ultraviolet rays cosmic rays radioactive substances substances

7 Chemicalsformaldehydebenzene asbestos fibers

8 CHUNK TIME! Compare chromosome mutations with gene mutations. Mutations are usually _____ and ______. Describe insertion and deletion. Define mutagenic agent. Name 3 types of radiation mutagenic agents. Name 3 types of chemical mutagenic agents.

9 Just For Fun

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