After you're done answering the journal, continue where you left off yesterday with your studying. Mrs. E has made all of your unit tests in Juno available to you so you can go back and see what a level 9 looks like, so feel free to peruse Juno.
This is your LAST journal of the school year! Explain what you need to study the MOST for the final exam.
After you're done answering the journal, continue where you left off yesterday with your studying. Mrs. E has made all of your unit tests in Juno available to you so you can go back and see what a level 9 looks like, so feel free to peruse Juno.
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Your final exam will be 107 multiple choice questions and will be 20% of your final score. Explain how you will study for this exam so you don't lower your score.
Any last minute questions about the Genetics Unit I can statements?
When you're done answering this journal, turn in your poster OR take a screenshot of your concept map and turn it in to the correct assignment in Google Classroom. Study the pedigree below. a) Identify the pattern of inheritance shown in the pedigree above.
b) Identify the genotype of individual II-2 in the pedigree. c) If individual II-2 and her husband had another child, what is the probability that they would have a son that showed the trait? Explain how you got this answer! Study the pedigree below. If Individuals II-1 and II-2 had another child, what would be the probability that they will have a child that WON'T show the trait?
Examine the pedigree below. What is the most likely pattern of inheritance the pedigree shows, and why? The patterns of inheritance are listed below for you. (Use the reading from yesterday to help you as well!)
autosomal dominant autosomal recessive sex-linked dominant sex-linked recessive a) How can environmental factors change the probability of a phenotype being shown in a population?
b) Explain the three ways we can get new alleles and genes. In objective #5 we will be looking at pedigrees and the different patterns of inheritance a pedigree can show us. If you don't know what a pedigree is, see the example below: There are four main possible patterns of inheritance we see in pedigrees. These four are listed below:
autosomal dominant autosomal recessive sex-linked dominant sex-linked recessive a) Based on your knowledge of autosomes and sex-linked traits, write down what you think EACH pattern of inheritance is in the answer to this journal. NO GOOGLING! b) What pattern of inheritance do you think the pedigree pictured above shows, and why? Describe TWO examples of how the environment and genes determines the phenotype of an organism. (Did your homework? This should be easy!)
Explain why the statement below would get a 7.
The difference between codominance and incomplete dominance is that codominance means there are two alleles that are expressed fully in the phenotype and incomplete dominance is where the heterozygote has a phenotype somewhere inbetween the dominant and recessive phenotypes. Write the DIFFERENCES between the sets of terms below:
a) incomplete dominance and codominance b) polygenic inheritance and multiple alleles c) linked genes and sex-linked genes a) Explain why the combination of alleles you inherited are different from your brother/sister. (Don't have a brother or a sister? Pretend you do!)
b) Write an analogy for each of Mendel's laws below in this format: (Law) is like _________________ because ___________________. Law of dominance Law of segregation Law of independent assortment Explain TWO WAYS the diagram below shows how different gametes get different allele combinations. Use specific details from the diagram to support your answer.
In 2-3 sentences, explain how different alleles get into different gametes during meiosis. (You should have two important events in your answer!)
Explain how the following are involved in separating Alan and amanda alleles forever:
a) segregation of alleles during anaphase I b) probability Two alleles, Alan and amanda, come to you separately, wanting you to write their life story (because they're alleles....they can't write. You can!). They want you to start at a very important time in their lives - prophase I of meiosis I. Starting at that point, write the life story of Alan and amanda, from prophase I until they end up in a gamete (egg or sperm).
In science teachers, nerdy (N) is dominant to non-nerdy (n) and exceedingly good-looking (G) is dominant to plain-looking (g).
a) A homozygous nerdy, plain-looking male science teacher marries a heterozygous nerdy, good-looking female. Write the cross. b) What is the probability of this couple having a child that is homozygous dominant for nerdiness and heterozygous for looks? c) What is the probability of this couple having a child that shows the recessive phenotype for both traits? a) From the cross below, calculate the probability that an organism will have a homozygous recessive genotype.
AA x aa b) From the cross below, calculate the probability that an organism will show the dominant trait for the first trait and the recessive trait for the second trait. AABb x AaBb Why does half od your DNA come from each parent?
When you are finished answering the question, fix the Objective #1-2 progress check that you took on Friday. Didn't take it? Raise your hand and Mrs. E will give you one to take now. Get up and go get a whiteboard, and eraser, and a marker. (By the way, my markers better be returned at the end of the period...some of the new ones have already gone missing! Please stop stealing my supplies!)
On your whiteboard, do all parts of the dihybrid cross problem below: An aquatic arthropod called a Cyclops has antennae that are either smooth or barbed. The allele for barbs (B) is dominant over smooth (bb). In the same organism Non-resistance to pesticides (N) is dominant over resistance to pesticides (nn). A Cyclops that is resistant to pesticides and has smooth antennae is crossed with one that is heterozygous for both traits. Show the genotypes of the parents. a) Write the cross. b) Do the Punnet square. c) Write the phenotypic ratio. (Write this as the answer to this journal!) In humans, polydactylism (having an extra finger on each hand) is dominant to the typical 5-finger arrangement. Tongue rolling is dominant to not being able to roll one’s tongue. A man who is homozygous for 5-fingers and who cannot roll their tongue has children with a woman who is heterozygous for polydactylism and tongue rolling.
a) Write the cross. b) Write the gametes for each parent. c) Describe how you would determine the phenotypic ratio from this cross. Explain why you must "FOIL" the parent genotypes to get the allele combinations that go on each side of a dihybrid Punnet square.
a) Explain how homozygous dominant and homozygous recessive are similar.
b) Explain how homozygous dominant and homozygous recessive are different. Write the genotypic ratios for the crosses below:
a) Aa x aa b) EE x Ee Write the instructions for how to calculate the ratios below from a monohybrid cross:
a) genotypic ratio b) phenotypic ratio |
Journal GuidelinesEveryone must answer the daily question. If you don't know, guess! I need thoughtful answers, not necessarily correct ones. You must put your REAL name on your response. No email is needed. Inappropriate names or responses will receive and automatic discipline referral. Archives
April 2015
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