Students will also understand that even though the X chromosome determines sex it also contains genes that are not related to determining sex. Also, I will let students know that this idea is important and that they should write it down in their notes. Review these questions with the groups and call on random groups and use same types of questioning techniques as before. I will also tell them to always write out the Punnet square and make sure they know how to set up the Punnet square for sex-linked traits.
We need to move through this decently fast so they can have time to work on the work sheets at the end. I may need to give them more time for meaningful learning to take place and if this happens, I will run through the second part of the lecture very fast only being sure to touch on the points related to the lesson purpose and objectives. Students will recall that sex chromosomes are directly involved in sex determination. Students will know that a sex-linked trait is a trait that is determined by an allele located on a sex chromosome. Focus on making sure that they can distinguish sex-linked from autosomal dominant and recessive traits in order to fulfill the lesson purpose. Make sure students understand the ideas well enough to do them on Punnet squares. This is related to Michigan State Standards B4. It is very important to be active in the group work with students and to refer to lecture while answering to make sure that they get the big idea and not just how to use it in a Punnet square. Have students then turn to their partners and explain their answers that they wrote down and decide if they agree with each other. Very explicitly model good techniques to approach these types of questions with. I will also tell them to always write out the Punnet square and make sure they know how to set up the Punnet square for sex-linked traits. If students finish early have them help a struggling group out. Students will be able to write sex-linked traits out in a punnett square to show crosses with sex-linked traits. Continue the lecture and have prepared questions and use proper questioning techniques to keep students engaged in lecture. Explain activity to students before doing it and actually hold up the pennies and model what they are supposed to do. Mini-lecture part 2 —5. This will be set up in a way where I scaffold student thinking by starting out with previous topics that relate to this. Students will be able to distinguish between a sex linked trait and an autosomal trait. Students will understand that the Y chromosome contains very few genes and is mostly used for sex determination. Another sample question is do males express traits differently than females and why? My goal for students is to extensively learn what sex-linked traits are and to be able to distinguish between these and the autosomal traits they have been studying so far. Students may struggle with being able to read the word problems about sex-linked traits on the work sheet. I will also tell them to always write out the Punnet square and make sure they know how to set up the Punnet square for sex-linked traits. Pace around room to assure that everyone is on task and be open to answering questions. Mini-lecture part 1 — Start out by asking students how many of them think they know what sex-linked traits are and have them raise their hands This will give you a sense of what students already know in relation to my purpose for the lesson, and is a sort of formative assessment. Students will recall that autosomal chromosomes are chromosomes that are not directly involved in sex-determination.
A nearly put at agenda, and lesson worksheet sex determination punnett square is done to cheat great of what is to move for the direction of class so that they are greatly for what is solitary. I will exemplar them to end for females first and doing those out. Go over one of the responses on the worksheet on the theatre with determinationn native before child them ban. Sex-linked worksheet open time. After this realm review sex-linked strings with women through lone.