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KEY CONCEPT Animals are diverse but share common characteristics.

KEY CONCEPT Animals are diverse but share common characteristics. Animals are the most physically diverse kingdom of organisms. Animals range in size from 25-meter-long blue whales to microscopic rotifers. Animals are found nearly everywhere on Earth.

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KEY CONCEPT Animals are diverse but share common characteristics.

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  1. KEY CONCEPTAnimals are diverse but share common characteristics.

  2. Animals are the most physically diverse kingdom of organisms. • Animals range in size from 25-meter-long blue whales to microscopic rotifers. • Animals are found nearly everywhere on Earth.

  3. All animals share a set of characteristics. • All animals share a unique set of derivedcharacters. • Animal cells aresupported by collagen. • three-strandedprotein • found in bone,skin, ligaments,fingernails,and hair

  4. diploid parents produce diploid offspring Diploid cells have two copies of each chromosome: one copy from the mother and one from the father • Animals are diploid and usually reproduce sexually. • do not have free-living haploid life stages

  5. Homeotic genes control early development. Hox genes determine the position of cells differentiation. A Hox gene mutation leads to the development of a body structure in the wrong position. • Most animals have Hox genes.

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