Number of cell types and number of gene families

Reference no: EM132904777

1. What do you think the correlation between number of cell types (multicellularity) and number of gene families linked to cell-cell signaling is?

2. Early mammalian development occurs in the uterus. What kind of selective pressures might operate in uterus?

3. How does an evo-devo approach to gene duplication support and strengthen the argument that evolution is like a tinkerer, building new gadgets from whatever is available at the time?

4. If all living humans can trace their matrilinear ancestry to a single female who lived between 100,000 and 200,00 years ago, does that means that our ancestral population went through such a tight bottleneck that the mitochondrial Even was the only reproductive female of her time?

Reference no: EM132904777

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