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प्रश्न
A cross was carried out between two pea plants showing the contrasting traits of height of the plants. The result of the cross showed 50% parental characters.
(i) Work out the cross with the help of a Punnett square.
(ii) Name the type of the cross carried out.
उत्तर
(ii) The type of cross carried out here is a test cross. It is a cross in which an individual with an unknown dominant phenotype is crossed with an individual (parent) homozygous recessive for that trait.
संबंधित प्रश्न
In a cross between two tall pea plants some of the offsprings produced were dwarf. Show with the help of Punett square how this is possible.
How are Mendelian inheritance, polygenic inheritance and pleiotropy different from each other?
Mention any two contrasting traits with respect to seeds in pea plant that were studied by Mendel.
How many types of genetically different gametes will be produced by a heterozygous plant having genotype AABbCc?
A plant of F1 generation has genotype “AABbCC”. On selfing of this plant, the phenotypic ratio in F2 generation will be ______.
A polygenic trait is controlled by 3 gene A, B and C. In a cress AaBbCc × AaBbCc, the phenotypic ratio of the offspring's was observed as 1 : 6 : × 20 X : 6 : 1 - what is the possible value of X?
For the expression of traits genes provide only the potentiality and the environment provides the opportunity. Comment on the veracity of the statement.
A, B, D are three independently assorting genes with their recessive alleles a, b, d respectively. A cross was made between individuals of Aa bb DD genotype with aa bb dd. Explain the type of genotypes of the offspring produced.
The pedigree chart given below represents the pattern of inheritance of sickle cell anemia in a family. Study it carefully and answer the questions that follow.
- What is the genotype of the father?
- What is the phenotype of the mother?
The pedigree chart given below represents the pattern of inheritance of thalassemia in a family.
What could be the genotype of the affected male?
