29.01.2020., srijeda

Activity: WHERE WE ARE COMING January 2020. Aim of the activity is for students to realize some answers related to the human origin, biodiversity and factors which influence heredity. When a baby is born to a family it usually starts up a conversation like whose nose does it have, whose eyes, fingers, mouth and it goes on. Thereby nobody remarks the cause of appearance of certain characteristics, but only the characteristic itself. Today we know the basic characteristics on which heredity of certain characteristics resides. What we look like is mostly determined in the moment of insemination. Also, some disorders and illnesses are determined at that moment. Still, some characteristics which appear later in life are influenced by our own decisions and style of life. Answer to the question what those characteristics are can be given by genetics and geneticists. The motivation for our activity comes out of this, and one of the tasks for the students is to examine important discoveries in genetics throughout history. History is filled with different theories about all the factors that influence our physical appearance or our behavior. Today, we know that the instructions on building our bodies are written inside our genes. The object of interest and examination of geneticists are structure, functions and actions of genes. Considering that genes are a small part of the DNA molecule which are found in the cores of cells, their effect was a mystery for a long time. Only by development of contemporary methods we were allowed a view into that microworld. Students were divided into four groups in order to realize the learning outcomes by examination of the previously mentioned: - first group of students made a poster with the topic ‘Important discoveries in genetics’ - second group of students made a table of dominant and recessive properties in humans on poster paper - third group of students had a task called ‘Inherited or acquired’, they worked in pairs and they described each other by using as many characteristics as possible and those that they listed were sorted into the ‘inherited/acquired table and they discussed which person in the pair could influence creation of acquired properties; then they solved a task in which they had to determine were the given properties inherited or acquired, finally they had to choose five inherited properties of the people from the table to show some of the dominant and recessive properties in humans and investigate (by watching or speaking) the manifestation with the participants (25 students) - fourth group showed the collected data with multiple bar graph contemporary methods by using Microsoft Excel and then solve mathematical tasks and combinatorics – a group of tasks called ‘What is my ear like, or which gene dominated?’ [Example of one of the tasks: ‘Mother and father are righthanded and their son is lefthanded. What kind of genotype can the parents have if the mark of the gene for a dominant right hand is D, and the left id d?’] Instructions which determine the appearance, and structure of a cell, organs in the body are inherited in form of genes from the parents. For every characteristic, at least one gene was inherited from the mother and one from the father. Results of the activities of all the groups were exhibited on the project board in school. Additionally: The activity is created and accomplished by Math teachers Denis Vujanović and Anita Jukić in cooperation with English teacher Dražena Vujanović. The activity is accompanied by making a short film in English which will be released on a transnational meeting in Romania and Poland 2020. In purpose of making this kind of a film, the activity is translated in English and leading actors are students who present their knowledge through the activity. For documenting the activity, we are going to use multimedia equipment, photo camera, camera, internet, You Tube channel and Adobe Premiere Pro program.

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