Bio 100 Exam 3 (Jaeger UNLV) Questions and Answers 100% Pass
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Bio 100
Bio 100 Exam 3 (Jaeger UNLV)
Questions and Answers 100% Pass
**Explain biotic potential.** Most populations can produce more offspring than the
environment can support.
**Define heritable.** Traits that can be passed on to the next generation.
**Describe the concept of evolution of acq...
Bio 100 Exam 3 (Jaeger UNLV) Questions and Answers 100% Pass **Explain biotic potential.** ✔✔ Most populations can produce more offspring than the environment can support. **Define heritable.** ✔✔ Traits that can be passed on to the next generation. **Describe the concept of evolution of acquired characters.** ✔✔ Over time, an organism can accumulate enough changes that one species may diverge into two, tracing back through ancestral species. **List the five agents of evolution.** ✔✔ Natural selection, sexual selection, gene flow, genetic drift, and mutation. **Explain gene flow.** ✔✔ It involves the movement of alleles between populations through migration. **What does gene flow introduce to a population?** ✔✔ Novel alleles from other populations. **Define genetic drift.** ✔✔ It is the random alteration of al lele frequencies in a population. **Define founder effect.** ✔✔ It occurs when a few individuals colonize a new habitat, leading to a new population that does not reflect the genetic diversity of the original population. **Explain genetic drift in the context of a population bottleneck.** ✔✔ Survival is random, resulting in a new population that lacks the genetic diversity of the original population. **Define sexual selection.** ✔✔ It is the differential reproductive succ ess based on differences in mating success, including female mate choice and male dominant systems . **Describe allopatric speciation.** ✔✔ It occurs when a species' geographic range is divided into isolated parts by barriers to gene flow, leading to isola ted populations. **Explain ancestral characters in an evolutionary tree.** ✔✔ These are traits present in a common ancestor. **Explain derived characters in an evolutionary tree.** ✔✔ These are traits unique to specific groups within the tree. **Define tissue.** ✔✔ Tissue is a group of cells of similar type working together for a common function. **List the four types of tissue.** ✔✔ Epithelial, connective, muscle, nervous. **Describe epithelial tissue.** ✔✔ It covers body surfaces, lines cavities, and forms organs. **List the three basic shapes of epithelial tissue.** ✔✔ Squamous, cuboidal, columnar, in simple (single layer) or stratified forms. **Describe connective tissue.** ✔✔ It is the most abundant tissue type that binds, supports, transports, a nd stores energy (adipose tissue). **Define proper connective tissues.** ✔✔ Areolar, adipose, dense connective tissues. **Describe areolar connective tissue.** ✔✔ It is widely distributed, found under the skin and around organs, providing structure and c ushioning. **Describe adipose tissue.** ✔✔ Found under the skin and around organs, it functions in energy storage, insulation, and cushioning. **Describe dense connective tissue.** ✔✔ Found in tendons and ligaments, it attaches muscle to bone or bone to bone. **List the three special connective tissues.** ✔✔ Cartilage, bone, blood. **Describe cartilage.** ✔✔ It lines joints and absorbs shock (e.g., between vertebrae) and provides flexibility (e.g., ears, nose). **Describe bone tissue.** ✔✔ It provides structure, protection, facilitates movement, stores lipids and minerals, and produces red blood cells. **Describe blood tissue.** ✔✔ Its main function is transport.
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