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Understanding Animal Diversity and Characteristics

Animals are a diverse kingdom yet share common traits, ranging from microscopic rotifers to massive blue whales. They are found worldwide and have unique characteristics like collagen-supported cells. Diploid parents producing diploid offspring, governed by homeotic and Hox genes, play key roles in animal development.

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Understanding Animal Diversity and 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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