EXTENTION OF MENDELIAN INHERITANCE Objective The objectives of this experiment were to observe Mendel’s law with inheritance trait of the curly wing mutation and the interactions between the mutant genes of vestigial wings and curved wings in Drosophila. Results Part A Cross A (wildtype females X curly males) Male Female Wild type 1 2 Curly wing 0 1 Table 1. The number of the phenotypes and sex of offspring of the Cross A Cross B (curly females X curly males) Male Female Wild
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gametes carrying either the B or the b allele‚ while the gametes of the white parent carried only the b allele. The white F1 offspring would have been genotype bb and the black F1 offspring were genotype Bb. +1 point 2. In Drosophila‚ three autosomal genes have alleles with the following dominance patterns: Gray body (G) is dominant over black (g) Full wings (A) is dominant over vestigial wings (a) Red eye (R) is dominant over sepia eye (r) Two crosses were performed with the following results: Parents:
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relationships‚ in the heterozygote both alleles will be completely expressed. For example‚ in human ABO blood types‚ two of the three alleles (the A allele‚ properly designated as IA‚ and the B allele‚ properly designated as IB) are co-dominant. This gene controls the deposition of antigenic markers on cells. A person with blood type A (homozygous for IA or heterozygous for IA and the recessive i (for O type)) has one kind of antigen marker‚ while a person with blood type B (homozygous for IB or heterozygous
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2011 Background Genetic Disorders occur when there is a change or mutation in the information contained in the genes. When cells get older or they have been exposed to something harmful disorders can occur. Genetic disorders can be caused by a mutation in one gene called monogenic disorder‚ by mutations in multiple genes called multifactorial inheritance disorder‚ by a combination of gene mutations and environmental factors‚ or by damage to chromosomes when there is changes in the number or structure
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4 forces of evolution – natural selection‚ mutation‚ gene flow‚ genetic drift Lendius – father of taxonomy 3 different effects of selection: Stabalizing – ex. Birth weight Disruptive – Striped guppies (b/c their parents were diff. colors) are not able to camouflage Directional – peacock’s tail‚ female peacock will choose to mate with male with best/most colorful tail. But a tail too extravagent could harm against predators Evolutionary Developmental - A large amount of genetic material
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base pairs and harbors a total of 1168 genes. While the Y chromosome contains only 50 million base pairs and is estimated to contain about 251 genes. Educational institutions such as Baylor University‚ the Max Planck Institute‚ the Sanger Institute‚ Washington University in St. Louis‚ and others have spent countless hours and millions of research dollars analyzing these unique chromosomes. As the data began to pour in‚ they allowed scientists to construct gene maps—using actual sequences from the
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pairs of genetic terms: A. Gene and trait: B. Gene and chromosome: C. Allele and gene: D. DNA sequence and amino acid sequence: Q3. For each of the following terms in the left column‚ choose the best matching phrase in the right column. a. phenotype 1. Having two identical alleles of a given gene b. alleles 2. The allele expressed in the phenotype of the heterozygote. c. independent assortment 3. Alternate forms of a gene. d. gametes 4. Observable
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Procedure for Case Study 1-Random Mating You will start by placing 75 light-colored beans and 25 dark-colored beans into a bag. The 100 beans represent your initial gene pool. The light beans represent the F alleles‚ and the dark beans represent the f alleles. This is the gene pool produced by mating between heterozygous (Ff) and homozygous normal (FF) individuals. Use the following to determine the number of dominant alleles in the population and the same formula to determine the number of recessive
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traits runs the risk of losing other genetic characteristics from the gene pool of the population which is an irreversible effect of selective breeding. Another disadvantage/advantage of selective breeding is in-breeding depression. In-breeding depression is when an undesirable gene is phased out in the selectively breed organism due to the exclusivity of the desired gene. This can be an advantage for the population as this gene is no longer present however the reverse can also
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Azariah Parks 08 February 16 Genetics Noonan Syndrome is a genetic disorder that causes a person not to develop properly in various areas of the body. These defects can occur in different areas‚ such as facial characteristics‚ heart defects‚ short stature‚ development delays and skeletal malformation. Symptoms from those areas can cause a person to have abroad or webbed neck‚ minor eye problems‚ abnormal bleeding‚ an unusual chest shape‚ which is often seen at birth‚ and late puberty particularly
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