Questions in genetics

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	Some pure black mice were mistakenly mixed with hybrid black mice. The quickest way to discover whether one individual black mouse is pure is
	When experimenting with the factor of tallness in Pisum sativum, Mendel obtained the results 73.97% tall and 26.03% dwarf from one of the cross. This shows that the parents are
	When Mendel crossed true breeding white-flowered strain of peas with a true breeding red-flowered strain, individuals in the F2 represented
	In a cross between white-flowered parents, F1 progeny was uniformly purple-flowered. The F2 progeny showed a phenotypic ratio 9 : 7 between purple-flowered and white-flowered plants. The above result indicates that the flower colour is controlled by
	In pea plants, red flowers (R) are dominant over to white flowers (r) and tall plants (T) are dominant over to dwarf plants (t). The table below shows the gametes and the possible offsprings produced in a dihybrid cross. The numbers 1 to 16 represent the genotypes of each individual cross (e.g. 3 = RrTT). If plant 7 is crossed with plant 12, then what proportion of the offsprings produced will be homozygous for both the recessive characters
	In wheat, when a green plant was self-fertilized, the progeny had 209 green seedlings and 14 white seedings. The above result indicates that
	The genotypes of a plant variety were TtHh, Tthh, ttHh and tthh, where T = tallness and H = hairy stem. Which one of the following crosses would produce progeny giving a phenotypic ratio approximately 1 : 1 : 1 : 1
	In a certain plant species, red flower colour is incompletely dominant to white flower colour (the heterozygote is pink) and tall stems are completely dominant to dwarf stems. If a tall pink plant (TtRr) is corssed with a tall white plant (TTrr), which one of the following types of plants would be produced in the offsprings
	From a mating of two dihybrid individuals (AaBb × AaBb), how many of the 16 possible zygote combinations would be expected to contain only two dominant genes
	From a mating of two dihybrid individuals (AaBb × AaBb), how many of the 16 possible zygote combinations would be expected to be homozygous dominant for gene

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