Suppose that a gene originally identified in nematodes (roundworms) is found to be homologous with a gene that can cause developmental abnormalities in humans. Would it be possible to study this same gene in fruit flies? Explain.

That statement point out that the gene is homologous. Homologous gene are evolved from common ancestor.So this gene can found in the ancestral population of both protostomes and deuterostomes.

Explanation:

Evolutionary relationship of three animal species (human,nematode and fruit fly) are closely related.The gene sequence of human and fruits fly are closely related than nematodes.There are 100 common genes among these three species.so it is possible to genetic study among them..

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

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