Describe the two mendelians laws of inheritance and discuss to what Essay

Describe the two mendelians laws of inheritance and discuss to what extent an X linked genes do not follow mendelian laws - Essay Example The two alternative forms of a factor are known as alleles and the genotype of an individual is made up from these alleles(Mueller et al, 2001) . Thus, every trait is governed by 2 alleles, one maternal and the other paternal. The genetic make up of any cell with reference to a particular trait is known as genotype and any observable trait like color, etc is known as phenotype. The Mendel Laws are based on the above facts and they are described below. The first law is the Law of Segregation, according to which, when an individual produces gametes, each gamete received only one copy of the genes. Thus, a single gamete will receive either one or the other allele. During random fertilization of gametes, the alleles unite again and the product has 2 sets of genes. When a particular gene has both recessive and dominant allelles, incomplete dominance occurs (Nussbaum et al, 2004). The expression of the phenotype is morphed by the expression of berth dominant and recessive alleles (Biology online). The second law is the Law of Independent Assortment. This is also know as the Inheritance Law. According to this law, alleles of different genes undergo independent assortment of one another during the formation of gametes (Jorde et al, 1995). Different traits are inherited independently of each other, with no relationship to each other with regard to inheritance.

Behaviorism Essay Example | Topics and Well Written Essays - 3000 words - 1

Behaviorism - Essay Example Principles of behaviorism should be part of every elementary classroom (Monchinski, 2008). Although not all activities or ideas are behaviorist in nature, it will help to incorporate behaviorism in some parts of the lesson. The reason behind this is that students in grade school are not yet mature and they need guidance in order to learn proper behavior and skills. Activating prior knowledge, providing models for activities, and giving rewards are some ways to incorporate behaviorism in the given lesson. Incorporating behaviorism into the lesson plan serves the teacher in three ways. First, by activating prior knowledge, the teacher will have the chance to check students’ understanding of the previous lesson. Likewise, by doing such, the students will feel the need to review past lessons, thus reinforcing good study habits among students. They will be inclined to think that past lessons should not be taken for granted; thus taking down notes, reviewing them, and even memorizi ng will help them get a better grade. Moreover, activating prior knowledge will make students see the link between the previous and the current lesson (Monchinski, 2008). Using principles of behaviorism, the teacher also provides model for learning a new skill. In the given lesson, students will be taught directly how to work on the thesis statement and subsections of the speech. This effort could guide students to perform the task appropriately and produce the expected output. Also, telling students what to do or what is expected to happen prior to performing the activity could lead them to write the best speech. The key is to condition learners to act as expected. Modeling and direct instruction also serve to promote positive behavior among students.