a) The characteristics that showed up most frequently were:One nose‚ pink coloured nose‚ 2 antennas‚ 6 legs‚ 2 eyes and 2 green humps were the most common characteristics. b) The Characteristics that showed up very seldom were:3 eyes‚ 2 body segments‚ blue legs‚ 1 antenna‚ a straight tail and 1 green hump. c) The following traits were found to be homozygous dominant:EE ( Eye number - 2 eyes)CC (Curly Tail)VV (Red eyes)d) The following traits were found to be heterozygous:Aa (Antenna number: 2 antennas)Mm
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parental gamete forming a new somatic cell. Another important law is the law of independent assortment which means that different gene pairs will separate independently of each other allowing two traits to be monitored at once. With these laws‚ ratios can be assigned to both the Monohybrid‚ a cross of only one gene‚ and a dihybrid cross‚ a cross of two independent genes‚ which will result in ratios for both phenotype and genotype. The phenotypic ratio for a standard F1 monohybrid cross is 1:2:1 while
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four daughter cells‚ each having one-half the normal number of chromosomes (23). Genes that code for a particular trait come in several forms or alleles. Genotype refers to the particular set of alleles an individual receives. Phenotype refers to an individual’s observable attributes. People with different genotypes may have similar phenotypes. Some traits involve only one gene locus and are called single-gene traits. The transmission of these traits from parent to offspring follows predictable
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heterozygotes which possess a single dominant and a single recessive allele and can accept each allele from one or the other parent. It will look indistinguishable to homozygous dominant entities thus the principle of segregation evidently supports Mendel’s phenotypic ratios. Subsequently the physical foundation of Mendel’s Law of Segregation is the primary division of the meiosis where the homologous chromosomes with their dissimilar versions of the individual gene are segregated into an offspring nuclei
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Internal Assessment | | A. SIMULATED BREEDING EXPERIMENTS WITH DROSOPHILA B. PROBABILITY AND MENDELIAN GENETICS IN PEA PLANTS | | Contents Part A Raw Data…………………………………………………………………………………………………………………...........................1 Processed Data……………………………………………………………………………………………………………………………………2 Conclusion…………………………………………………………………………………………………………………………………………..3 Part B Raw Data……………………………………………………………………………………………………………………………………………..4 Processed
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Prophase 1 of meiosis When prophase I occurs the chromosomal condensation enables the chromosomes to be looked at under the microscope. Then during late prophase I the homologous chromosomes laterally pair or usually side by side which is then known to be in synapsis this is when cross connections form from Breakage and re-joining between the chromatids which can occur between the pair homologous chromosomes which then lead to genetic combination between the strands which are there. Chiasma occurs
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Chapter 10 Foundations of Genetics Lecture Notes 1 Foundations of Genetics Mendel and the Garden pea The father of modern Genetics is Gregor Mendel. Gregor Mendel (1822-1884) was an Austrian monk who lived in a monastery where the experiments with the garden pea were performed. Mendel’s work with the garden pea was the fundamental study which unveiled the laws that govern genetics and heredity. Mendel was the first to use the scientific method in a very systematic and analysed his results
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Genes are found in our chromosomes‚which parents pass on to offspring in their sex cells in reproduction. Different versions of the same gene are called alleles‚ and these can determine features like eye colour‚ and the inheritance of disorders such as cystic fibrosis. DNA the nucleus controls the activities of a cell. The instructions for how an organism develops are found in the nuclei of its cells Chromosomes Chromosomes are structures found in the nucleus of most cells. They consist of long
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genotype‚ phenotype‚ dominant allele‚ recessive allele‚ co-dominant alleles‚ locus‚ homozygous‚ heterozygous‚ carrier and test cross * Genotype- the alleles of an organism * Phenotype- the characteristics of an organism * Dominant allele- an allele that has the same effect on the phenotype whether it is present in the homozygous or heterozygous state * Recessive allele- an allele that only has an effect on the phenotype when present in the homozygous state. * Co-dominant alleles- pairs
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different genotypes for seed color be identical in phenotypes? -½ plants could be homozygous for the dominant allele while the other one could be heterozygous An example of convergent evolution it can be demonstrated that organisms of the 2 groups that converged -Occupy similar environments The
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