11. a) Pollen from a red - flowered plant A was used to pollinate white flowered...
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11. a) Pollen from a red - flowered plant A was used to pollinate white flowered plant B, the seeds from which produced 157 red-flowered plants. When a red flowered plant C was pollinated by a white-flowered plant D, the resultant seeds gave rise to 84 red-flowered plants: and 91 white flowered plants. Assuming that plants A, B, C, and D were all of the same species and that flower colour in that species is controlled by a single pair of genes. Using R for dominant gene and r for recessive gene, write down the genotypes of the following. i) ii) iii) iv) vi) Plant A Plant B Progeny of A x B cross Plant C Plant D Red flowered progeny of C x D cross. 6mks b) Sickle - cell anaemia is a hereditary disease due to mutation of gene for normal haemoglobin to gene that causes sickle cell anaemia. What are the possible phenotype offspring of a man and a woman both heterozygous. 2mks 11. a) Pollen from a red - flowered plant A was used to pollinate white flowered plant B, the seeds from which produced 157 red-flowered plants. When a red flowered plant C was pollinated by a white-flowered plant D, the resultant seeds gave rise to 84 red-flowered plants: and 91 white flowered plants. Assuming that plants A, B, C, and D were all of the same species and that flower colour in that species is controlled by a single pair of genes. Using R for dominant gene and r for recessive gene, write down the genotypes of the following. i) ii) iii) iv) vi) Plant A Plant B Progeny of A x B cross Plant C Plant D Red flowered progeny of C x D cross. 6mks b) Sickle - cell anaemia is a hereditary disease due to mutation of gene for normal haemoglobin to gene that causes sickle cell anaemia. What are the possible phenotype offspring of a man and a woman both heterozygous. 2mks
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Molecular Cell Biology
ISBN: 978-1429234139
7th edition
Authors: Harvey Lodish, Arnold Berk, Chris A. Kaiser, Monty Krieger, Anthony Bretscher, Hidde Ploegh, Angelika Amon, Matthew P. Scott
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