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What is the genotype of dwarf plants which always produced dwarf offspring?
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What is the genotype of tall plants which always produced tall offspring
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What is the genotype of dwarf plants whose parental cross always produces tall offspring?
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What sizes of plants are produced if both parents have genes Tt?
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Gregor Mendel's first law of genetics states "Of a pair of contrasted characters, only one can be represented in a gamete by its internal 'factor Give the modern name for this 'factor'.
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Gregor Mendel's first law of genetics states "Of a pair of contrasted characters, only one can be represented in a gamete by its internal 'factor' State where these factors are found in gametes.
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Give the contrasting traits of the following characters in pea plant and mention which is dominant and which is recessive:
Yellow seed
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Give the contrasting traits of the following characters in pea plant and mention which is dominant and which is recessive :
Round seed
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Why did Mendel choose pea plants for conducting his experiments on inheritance?
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State Mendel's second law of inheritance.
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How do Mendel's experiments show that traits may be dominant or recessive?
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How do Mendel's experiments show that traits are inherited independently?
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When two parents are crossed, the offspring are referred to as :
recessives
test cross
F1 generation
F2 generation
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A cross between two individuals results in a ratio of 9 : 3 : 3 : 1 for four possible phenotypes of progeny. This is an example of a ______.
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For his experiments on heredity, Mendel used :
papaya plants
potato plants
pea plants
pear plants
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In order to ensure that he had pure-breeding plants for his experiments, Mendel :
(a) cross-fertilised each variety with each other
(b) let each variety self fertilise for several generations
(c) removed the female parts of the plants
(d) removed the male parts of the plants.
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In the human blood grouping, the four basic blood types are type A, type B, type AB, and type O. The blood proteins A and B are :
(a) simple dominant and recessive traits
(b) incomplete dominant traits
(c) codominant traits
(d) sex-linked traits
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A pregnant woman has an equal chance of her baby being blood group A or blood group AB. Which one of the following shows the possible genotypes of the woman and the father of her child?
(a) IA IA and IB IO
(b) IA IB and IB IO
(c) IA IO and IB IO
(d) IA IB and IA IO
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The following results were obtained by a scientist who crossed the F1 generation of pure-breeding parents for round and wrinkled seeds.
| Dominant trait | Recessive trait | No. of F2 offspring |
| Round seeds | Wrinkled seeds | 7524 |
From these results, it can be concluded that the actual number of round seeds he obtained was ______
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