Patterns of Descent with Modification General Biology 2 PDF

GENERAL BIOLOGY 2 Quarter 3 Good day!  REMINDERS!! ALWAYS wear your face masks. FREQUENTLY sanitize your hands and/or use alcohol. AVOID unnecessary chatting with seatmates. KEEP mobile phones/gadgets temporarily.  CLASS PRAYER Father God,...

GENERAL BIOLOGY 2 Quarter 3 Good day!  REMINDERS!! ALWAYS wear your face masks. FREQUENTLY sanitize your hands and/or use alcohol. AVOID unnecessary chatting with seatmates. KEEP mobile phones/gadgets temporarily.  CLASS PRAYER Father God, Come be with us today. Fill our hearts with joy. Fill our minds with learning. Fill our lesson with fun. Fill our classmates with kindness. Fill our classroom with peace. Fill our school with love. Amen. Who’s IN? Who’s OUT?  REVIEW Q. What are the mechanisms of evolution? FQ. How does mechanisms affect the diversity of present organisms?  LESSON OBJECTIVES a. Describe the different patterns of descent with modification; and b. Discuss the implications of the patterns of descent to evolution of various organisms.  MELC: Show patterns of descent with modification from common ancestors to produce the organismal diversity observed today. STEM_BIO11/12-IIIc-g-10  ACTIVITY 1 2 Truths and a Lie Direction: Learners read and analyze the given set of descriptions and try to identify which one is the lie.  Divergent Evolution 1. Species evolve from a common ancestor and become increasingly different over time. 2. Species adapt to their specific environments and develop distinct traits. 3. Seen in species that face similar selective pressures but are geographically isolated. R  Convergent Evolution 1. Species face similar selective pressures but are geographically isolated. 2. Unrelated species independently evolve similar traits due to similar environmental pressures. 3. Is the opposite of divergent evolution. R  Parallel Evolution 1. Occurs in species that share a recent common ancestor. 2. Two or more species evolve in response to each other. 3. Species evolve similar traits independently from a common ancestor. R  Coevolution 1. One species evolves new traits or behaviors, the other species responds by evolving counter-adaptations. 2. Occurs when two species have a close ecological relationship. 3. Different groups within the population adapt R to exploit different resources.  Adaptive Radiation 1. Single ancestral species gives rise to multiple new species that occupy different ecological niches. 2. Population adapt to exploit different resources, forming of new species. 3. Often seen when species are exposed to different environmental conditions or R occupy different niches.  ACTIVITY 2 Unscramble Direction: Learners analyze the given descriptions and arrange the letters to reveal the correct terms.  NURATAL SELTIONEC 1. The process by which certain traits become more or less common in a population due to their impact on survival and reproduction. NENCOVNERGET ELUTVOION 2. Descent pattern considered as the opposite of divergent evolution.  COELUTIONVO 3. Relationship between flowering plants and their pollinators is an example of this descent pattern.  ADTIAPVE RADTIONIA 4. Descent pattern under which different groups within the population adapt to exploit different resources, leading to the formation of new species through time.  ELPARALL OEVLTIOUN 5. Descent pattern is often seen in species that face similar selective pressures but are geographically isolated.  Lesson 7: Patterns of Descent with Modification  Patterns of Descent Natural selection is a fundamental concept in evolutionary biology that explains how species change over time. It is the process by which certain traits become more or less common in a population due to their impact on survival and reproduction.  Patterns of Descent One of the key aspects of natural selection is the patterns of descent that can be observed in the evolution of species.  1. DIVERGENT EVOLUTION - It occurs when two or more species evolve from a common ancestor and become increasingly different over time. - This pattern of descent is often seen when species are exposed to different environmental conditions or occupy different niches.  1. DIVERGENT EVOLUTION - As a result, they adapt to their specific environments and develop distinct traits. - A classic example of divergent evolution is the finches of the Galapagos Islands, which evolved different beak shapes and sizes to exploit different food sources. 1. DIVERGENT EVOLUTION  2. CONVERGENT EVOLUTION - Convergent evolution is the opposite of divergent evolution. - It occurs when unrelated species independently evolve similar traits due to similar environmental pressures.  2. CONVERGENT EVOLUTION - This pattern of descent can be observed in different parts of the world where similar habitats or ecological niches exist. - For example, the streamlined body shape of dolphins and sharks is an example of convergent evolution, as they both evolved to be efficient swimmers in their respective marine environments. 2. CONVERGENT EVOLUTION  3. PARALLEL EVOLUTION - Is a pattern of descent in which two or more related species evolve similar traits independently from a common ancestor. - Unlike convergent evolution, parallel evolution occurs in species that share a recent common ancestor.  3. PARALLEL EVOLUTION - This pattern is often seen in species that face similar selective pressures but are geographically isolated. - An example of parallel evolution is the marsupials in Australia, such as the kangaroo and the koala, which evolved similar adaptations for life in the Australian environment. 3. PARALLEL EVOLUTION  4. COEVOLUTION - Is a pattern of descent in which two or more species evolve in response to each other. - This occurs when two species have a close ecological relationship, such as predator-prey or mutualistic interactions.  4. COEVOLUTION - As one species evolves new traits or behaviors, the other species responds by evolving counter-adaptations. - A classic example of coevolution is the relationship between flowering plants and their pollinators, such as bees or butterflies.  4. COEVOLUTION - The plants evolve attractive flowers and nectar to attract pollinators, while the pollinators evolve specialized mouthparts or behaviors to efficiently extract nectar. 4. COEVOLUTION  5. ADAPTIVE RADIATION - Is a pattern of descent in which a single ancestral species gives rise to multiple new species that occupy different ecological niches. - This occurs when a population of organisms colonizes a new environment with diverse available resources.  5. ADAPTIVE RADIATION - Over time, different groups within the population adapt to exploit different resources, leading to the formation of new species. - The finches of the Galapagos Islands are classic example of this, as they evolved into multiple species with different beak shapes and sizes to exploit different food sources on the islands. 5. ADAPTIVE RADIATION  Mechanism Of Evolution These are just a few examples of the patterns of descent that can be observed in natural selection. Each pattern provides insights into the diverse ways in which species evolve and adapt to their environments.  Mechanism Of Evolution By studying these patterns, scientists can gain a deeper understanding of the processes that shape the diversity of life on Earth. Questions?  ACTIVITY 3 Crossword Puzzle Direction: Learners complete the crossword by filling in the word that describes each clue.  ACROSS 4. 5. 1. Patterns of _______ 1. that can be observed in the evolution of species 2. is considered one key aspect of 3. natural selection.  ACROSS 4. 5. 2. Kangaroo and the 1. koala are ________ found in Australia which are great 2. example species undergone parallel 3. evolution.  ACROSS 4. 5. 3. Adaptive radiation 1. occurs when a population of organisms ______ a 2. new environment with diverse 3. available resources.  DOWNWARD 4. 5. 4. _______ is a pattern 1. of descent in which two or more species evolve in 2. response to each other. 3.  DOWNWARD 5. Divergent 4. 5. evolution is often 1. seen when species are exposed to different 2. environmental conditions or 3. occupy different __________.  Application Q. To which activity /scenario in your daily life can you relate the concepts discussed?  Let’s Wrap Up! Sum up the lesson through completing the statements based on the discussion:  STATEMENTS: a. Patterns of descent refers to… b. Patterns of descent includes…  ENRICHMENT Direction: Do advance study and research regarding: Development of Evolutionary Thought THANK YOU!