PPT-Sex Determination Unit 2: Organisms and Evolution

Advanced Higher Biology Miss A Aitken How do we become male or female Genes most common Sex can be determined by genetic factors Environment less common Sex can be determined by things going on in the environment. THEORY OF EVOLUTION. The theory of evolution is scientists explanation of how living things began. .. Also called organic evolution . LIVING ORGANISMS HAVE CHANGED GRADUALLY OVER TIME TO FORM NEW ORGANISMS THAT ARE MORE COMPLEX.. Forensic Science 11/11/14. Drill. List the characteristics of a . female . skull.. List the characteristics of a . male . pelvis.. In general. , how are male and female bones different?. IWBAT. Determine the gender of bones using characteristics of the skull and pelvis. Define the term variation.. Discuss the fact that variation occurs within, as well as between, species.. Describe the differences between continuous and discontinuous variation, using examples of a range of characteristics found in plants, animals and other organisms.. ali. 2019. lecture (5). . The word . sex. . has been derived from Latin word . sexus. . meaning . section. . or. . separation. . . Members . of almost all species are often divided into two sections according to the kind of gamete or sex cell produced by them, i.e. The term . sex . refers to sexual phenotype.. . Most organisms . have only two sexual phenotypes: . male and female. . The fundamental difference between males and females is gamete size: . males produce small gametes. Sex Determination. Xy =. . XX= . female. male. Female . karyotype. Male . karyotype. X and Y chromosomes. Who decides. ?. Mom can give X . Dad can give X or Y. brought to you by CORE View metadata, citation and similar papers at core.ac.uk provided by Jagiellonian Univeristy Repository 34 Analysis of the anatomical dimorphic features of the human skulls ena Chapter 17: Processes of Evolution. Early Beliefs. 19. th. century: discovered species shared many traits, but lived in different parts of the world. Problematic – species only looked similar on the outside, but inside were very different . Unit 2: Organisms and Evolution. 2biii. – Sex determination. Gender (2). Chromosomal sex determination (2). Sex linkage (5). Dosage compensation (2). Environmental sex determination (3). Changing sex (2). Warm Up: Set up your notes in your notebook. Page: 55. Title: Cladograms. Date: 1/18. EQ: How can I model divergent evolution. Standard. : B8B Categorize organisms using a hierarchical classification system based on similarities and differences shared among groups. Evolution. – when a species of plants or animals adapts to their environment in order to survive over a long period of time. Key points!. Species. Plants or Animals. Adaptations. In order to survive. Context and Introduction to Unit. In this unit pupils will learn about evolution and how species have evolved from three billion years ago through the process of Natural Selection. Pupils will learn about the importance of biodiversity is ensuring the human population survives.. . The process by which organism change over time. Based on science, not opinion.. Darwin. :. Evolution is descent with modification. Evolution. :. changes through time. Species accumulate difference. Diversity and Evolution Of Living Organisms . The scientific theory of evolution is the . organizing . principle. of life science.. 2. The scientific . theory of . evolution is supported . by . multiple forms.