Hermaphrodite - PowerPoint PPT Presentation

lecture 8. Epistasis and Pathways

lecture 8. Epistasis and Pathways. Interactions of null alleles Additivity of nulls implies distinct pathways. Epistasis of nulls implies common pathway. Synergism of null alleles implies parallel pathways with a common target. Additivity of hypomorphs is consistent with anything. 1. 3.

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Sexual Reproduction

Sexual Reproduction. Fertilization. Recall that sexual reproduction occurs when one haploid – the sperm – fuses together wi th another haploid – the egg. Each haploid contains 23 chromosomes. When they combine they produce a zygote (an offspring) . Alleles.

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I am an animal…. Hear me roar!!!!

I am an animal…. Hear me roar!!!!. If I could roar, I would, but I have no germ layers. . Which means I have no tissue to build muscles or nerves . . I am multi-cellular. Some theorize that I evolved from animal like protists that looked like this type of cell . Choanocyte.

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230 views • 6 slides

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