Genetics II: Mendeljan Genetics and Dihybrid Crosses 1-describe what a dihybrid cross is; 2-predict the outcome of a dihybrid cross for linked and unlinked genes;
Q: Part 1: Monohybrid Cross 1. Set up and complete Punnett squares for each of the following crosses.…
A: NOTE: since you have posted multiple questions with multiple subparts, so we will be solving the…
Q: 20. Interspecific crosses are rare in nature and intergeneric crosses almost unknown. Why? 21…
A: In genetics, interspecific hybrid crosses are defined as the cross of plant species with other two…
Q: 2. Draw and label the chromosome at metaphase I. Metaphase I Chromosome number Chromosome…
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Q: cross a dihybrid (AaBb) in cis conformation with a homozygous recessive individual (aabb) and…
A: Linked and Unlinked cross: A dihybrid cross is a cross between two organisms involving two genes,…
Q: GQ#8: What are the other examples of: (Write 2 examples on the space provided after each item.) A.…
A: Homologous is most commonly used in science in the phrase homologous structures, which refers to…
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A: The genes are the active form of the DNA that perform all the functions of an organism and also…
Q: 25. Crossing over involves each of the following with the EXCEPTION of O A. Transfer of DNA segments…
A: The meiosis is a cell division process by which a diploid (2n) mother cell divides it's nucleus…
Q: What is Crossing over occurring within in a gene?
A: Crossing over refers to the exchange of genetic material in the germline. During meiosis, the…
Q: I need help with 8-9
A: Male has XY chromosomes & females have XX chromosomes. While fertilization, zygote gets one…
Q: 16. Genetic Variation can occur when homologous chromosomes cross over. What occurs during this…
A: Hereditary qualities is a part of science worried about the investigation of qualities, hereditary…
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Q: ii. During metaphase I, there are two possible ways for the two tetrads to be aligned at the center…
A: Introduction :- Meiosis is a type of reductional cell division , in which a single cell divides into…
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A: Note -Since you have asked multiple questions, we will solve the first question (6) for you. If you…
Q: 2. Identify the kind of chromosome error in each diagram. Chromosomal Error X X Y TIID ×
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Q: activity? Describe a chiasma. When are they formed? What is the end result of the formation of…
A: The indirect process of cell division in which the chromosome of parent cells divide once but…
Q: division? A. process results in variation of organisms B. daughter cells has the same gamete…
A: Meiosis is a process in which a single cell divides twice to produce four cells with half the amount…
Q: 25. Crossing over involves each of the following with the EXCEPTION of O A. Transfer of DNA segments…
A: Crossing over is defined as the exchange of genetic material between two homologous chromosomes. It…
Q: Pedigree Analysis 1. Study the pedigree below and predict the genotypes and phenotypes possibilities…
A: Mendel's law states that the two alleles of a gene do not merge in any way while they are present…
Q: A. Genotypic Analysis 1. The Problem 2. The Null Hypothesis The Distribution and Chi-square…
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Q: In the example shown , what is the underlying cause of nonallelichomologous recombination?
A: Chromosomes are found in the nucleus of living cells that is made up of protein and deoxyribonucleic…
Q: 5. By conducting testcrosses, researchers have determined that corn has ten linkage groups. How many…
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Q: 12. Genetic disorders can be studied using the construction of pedigrees. In a pedigree: a. Males…
A: PEDIGREE ANALYSIS These are the diagrams are used to determine the mode of inheritance of a…
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Q: ACTIVITY 1: Monohybrid cross in corn In corn the allele for purple seed (P) is dominant and the…
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Q: SUBJECT: GENETICS HUMAN SEX CHROMOSOME Distinguish male from female human beings. (Based on sex…
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Q: 21. Assuming sexual reproduction and that no mutations have occurred, which of the following…
A: An offspring's genotype is the result of the combination of genes in gametes (sperm and ova) that…
Q: Describe briefly the process of karyotyping
A: Karyotyping is the process of pairing and ordering of all the chromosomes present in a cell of an…
Q: 10. Haemophilia is a sex linked disorder caused by a recessive allele carried on the X chromosome.…
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Q: 3. Show the daughter cells at the end of meiosis. Are those cells genetically identical? 4. All…
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Q: 2. X-linked gene for wing length, with two variants: L = long wings, dominant to l = miniature…
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Q: HELP URGENTLY!!! NEED RESPONSE FAST Genes A, B and C are on the same chromosome linked in cis…
A: If the genes are located on the same chromosome then they are classified as linked genes and in this…
Q: Observation
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A: Cystic fibrosis is a hereditary disease that affects the lungs and digestive system. The body…
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- Topic: Modifications of Mendelian Genetics LEARNING ACTIVITY and ASSESSMENT 1. In addition to the ABO blood group, many others have been identified in humans. One such group is the MN group, controlled by two codominant alleles, M and N, at one locus. What will be the probability of the genotypes and phenotypes that would be produced in crosses involving the following phenotypes: а. Туре М and type N b. Туре М and type MN c. Type N and type N d. Type MN and type MN 2. Could a child of type N result from the mating of M and MN? Justify your answer.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:A. Identify the genotypes of the male and female used in cross 2. B. Identify the cross in which the female parent was most likely heterozygous. C. Explain how the results exclude the possibility that the trait is encoded by a mitochondrial gene.
- Test Crosses: Determining Unknown Genotypes 3. Coat color in Labradors is caused by two different alleles of a color gene. The dominant allele, B, generates black fur, while the recessive allele, b, generates brown fur. Your neighbor has a black Labrador and is interested in understanding how to determine if his dog is homozygous or heterozygous for the black coat color genotype. Answer the following questions to determine how a test cross could help your neighbor discover his dog's genotype. a. What are the possible genotypes of your neighbor's Labrador? b. In a test cross, why is the organism of unknown genotype crossed to a homozygous recessive individual? Assign the possible paternal gametes of the unknown Labrador to the vertical axis in each of the Punnett squares at right. Assign the gametes of the homozygous recessive dog to the horizontal axes in each of the Punnett squares. c. What are the expected genotypes and phenotypes of the puppies that will result from the test cross…Direction: Read and understand the ff. set of monohybrid cross problems and answer each problem by showing the Punnett square, genotypes ans phenotypes. 3. In tomatoes, red fruit (R) is dominant over yellow fruit (r). A plant that is homozygous for red fruit is crossed with a plant that has yellow fruit. What would be the genotypes and phenotypes? 4. If two of the first generation offspring from the problem above were mated, what would be the genotypes and phenotypes of the second generation?Incomplete Dominance 1. In snapdragons, red flower color (R) is incompletely dominant over white flower color (r). The hybrids or heterozygous plants (Rr) are pink in color. a) Show the genotype for a white flower and for a red flower. b) If a red-flowered plant is crossed with a white-flowered plant, what are the genotypes and phenotypes of the F1 generation plants? Show your work. c) What genotypes and phenotypes will be produced in the F2 generation? Show your work? the the o doa A t r th s beirs ard the phenorypic and wo ran aials pring fro d) How did the genotypic and phenotypic ratio compare to each other in this incomplete dominance cross? gonarypi and e) What would the phenotypic ratio have been if this had been complete dominance?
- GI GI Gi gI gi 5 Gi|2|3|X gI 1 gi 4 6 G = green yellow I = inflated i= constrictedProblem Solving: In Drosophila, the gene that controls red eye color (dominant) versus white eye color is on the X chromosomes. What are the expected phenotypic results if a heterozygous female is crossed with a white-eyed male? In cats, S = short hair; s = long hair; XC = black coat; Xc = yellow coat; XCXc = tortoiseshell (calico) coat. If a long-haired yellow male is crossed with a tortoiseshell female homozygous for short hair, what are the expected phenotypic results?Biology = genetics please do Challenge problem 3 Now, figure out the complementation groups. This shows how many genes are involved in this pathway. Some of the mutant classes in the previous problem must contain more than one complementation group (gene) For example class 2 is defined by mutants 1,3,4,6, and 7. These mutants may, or may not, all be in the same gene. Complementation testing will help you know if they are, or are not, in the same gene. So there are actually additional steps between some of the letters. For example, maybe instead of XàY, it is really X->F->G->Y.
- Deletion mapping: In your diploid model organism, one copy of the chromosome has all normal, dominant alleles of these genes. It is P Q R STU V (not necessarily in that order). But the other copy of the chromosome has all recessive alleles, p q r stu v. You find various deletions in which chunks of the "dominant chromosome" are missing, and so there are recessive phenotypes as shown: Phenotype -- recessive for genes... T, Q, and U R, V, and S T and U S and V Q, P, and R R and S First deletion Second deletion Third deletion Fourth deletion Fifth deletion Sixth deletion Seventh deletion T and Q Figure out the order of the genes. Show some kind of work.Part 1: Mendelian Genetics 1. For each of the genotypes Purple Flowers are Dominant to white flowers PP - Purple Pp - Purple pp-White Straight hair is dominant to curly hair below, list all possible phenotypes. Brown eyes are dominant to blue eyes Straight - HH, Hh Curly - hh BB- Bb bb- 2. For each of the phenotypes below, list all possible genotypes. (Remember: use only 1 letter to designate a trait, big and small per scenario) Pointed heads are dominant to round heads Black fur is dominant to white fur Pointed - Round - FF - Ff- ff - Jagged leaves are dominant to smooth leaves Jagged - Smooth -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 fur
