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- Chromosomes and Genetics Name 1. Edward and Jenna had 4 children together. They have a few "interesting" traits, shall we say! Look at the chromosome combinations that each child received and list their genotype and phenotype. Key: D= long eyelashes B = brown eyes F= freckles G = vampire teeth T= tall W = werewolf fur d = short eyelashes b = red eyes f= no freckles g = no vampire teeth t = short w = no werewolf furTopic: Penetrance. Petal number is controlled by a single gene in merigonias. The gene has a completely dominant wild type allele F that makes a plant have five petals and a mutant recessive six petal allele(f). However the six petal trait is only 50% penetrant. You do the cross Ff x Ff. What fraction of the progeny do you have the 6 petals? what is the meaning for 50% penetrant.Based from the attached photo. Design a cross (or a series of crosses) that will allow you to generate more flies with white bodies and blue eyes. Indicate the genotypes and phenotypes of the flies that you will cross along with the expected genotypes and phenotypes of the progeny.
- Genetics (Study of genes) O a. All the other choices are valid O b. Our traits can be controlled by one or more genes O c. It is the study of the mode of transmission of genes from one generation to the next. O d. There are in general two copies of each gene called alleles in every diploid cell, with one allele on each homologous chromosome. If you get blue-black upon adding IKI to a substance, then this substance is a protein or a polypeptide O a. True O b. FalseSCIENCE - WRITTEN WORK 2 A. Identifying the Probability: Using Punnett Square, predict genotype percentage of traits of the offspring following a simple pattern of inheritance (Mendelian Genetics). Write your answers on a separate sheet of paper. 1-8. Identify the possible genotypes of the offspring, given the following parental genotype. Male: RR x Female: Rr male R R genotypes number percentage female R r Male: Gg x Female: Gg G male g genotypes number percentage female G gDetermining Gene Order 1. We want to map the distance between genes E (tall height), B (blue flower color), and G (thick stalk). Each geen has a recessive allele (e= short, b= white and g= thin). (The actual configuration of the Trihybrid will be deduces as a part of the process) A. Your testcross genotypes will be (use slash notation). Female: ______ Male:______ Based on these results, are the genes linked or not? _______
- Genetics Problems. Show your crosses. It must contain: (a) parental genes, (b) genotypic ratio, (c) phenotypic ratio, (d) hybrid cross and (e) other answer needed in the question. An albino is a person with no pigmentation in his skin, eyes or hair. Normal pigmentation is (A) is dominant over albino (a). A normal pigmented man marries a homozygous normal woman. What would the expected appearances of the children beolving Monohybrid Inheritance single gene. crosses. The henotypic traits controlled by a single gene. The problems are to give you practice in problem solving using Mendelian genetics. A dominant gene (W) produces wire-haired texture in dogs; its recessive allele (w) produces smooth hair. A group of heterozygous wire-haired individuals are crossed and their F1 progeny are then test-crossed. Determine the expected genotyplc and phenotypic ratios among the test cross progeny:The ff. mothers, (A) through (E) with given phenotypes, each produced one child whose phenotype is described. For each child, select as the father ONE of the five males whose genotypes are given. Genotype of male (1) IA i MN rr XAY (2) IB i MN RR XAY (3) ii NN rr XAY (4) ii MM rr XaY (5) IAIA MN RR XaY Give possible genotypes of all the mothers and children: Mother Maternal Phenotype Phenotype of child Possible father (write number only) A Type A, M, Rh+, normal color vision Type O, M, Rh+ , normal color vision, male B Type B, N, Rh-, colorblind Type O, N, Rh-, colorblind male C Type O, M, Rh-, normal color vision Type A, MN, Rh+, colorblind, female D Type A, N, Rh+, normal color vision Type AB, MN, Rh+, normal color vision, female E Type AB, MN, Rh- , normal color vision Type AB, M, Rh-, colorblind, male
- All of the above 8. Which is the correct description of the human chromosome number? * O2n =23 (where n=23, the number of different numbered human chromosomes) O2n = 46 (where n=23, the number of different numbered human chromosomes) O 4n = 23 (where n=23, the number of different numbered human chromosomes) O4n = 46 (where n=23, the number of different numbered human chromosomes) Any comments please use this space (e.g. to clarify an answer or point out w issues on questions, etc.)Let us practice it again! Analyze the pedigree below to answer the questions that follow. Huntington's disease a disorder in which nerve cells waste away, or disintegrate, is passed down through families. certain parts of the brain Huntington's diseate llustration ereated in htps://pregenygenetion.com/ 1. What members of the family above are affected with the Huntington's disease? 2. Tnere are no carriers ior Huntungton's disease you either have it or you do not. Is Huntington's disease caused-by a dominant or recessive trait? 3. Identify the genotypes of the following individuals using the pedigree above. (homozygous dominant, homozygous recessive, heterozygous). I- 1 II -1: II -3: III - 4 : 4. How many children did individuals I-1 and I-2 have? 5. How many girls did II-1 and II-2 have? How many have Huntington's Disease? 6. How are individuals III-2 and II-4 related? I-2 and III-5?Pedigree 3: NOTE: the asterisk (*) indicates that the individual does not have any disease-related alleles. A. What is the most likely mode of inheritance of this disease? Choose from: autosomal dominant, autosomal recessive, X-linked dominant, X-linked recessive. B State the genotypes of individuals #1 - #4. C What is the probability of individual A being affected (show the disease)? What is the probability of individual B being affected? Pedigree 4: