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प्रश्न
What are the characteristic features of a true-breeding line?
उत्तर
A true-breeding line for a trait is one that, has undergone continuous self-pollination or brother-sister mating, showing stability in the inheritance of the trait for several generations.
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संबंधित प्रश्न
In a homozygous pea plant, axial flowers (A) are dominant over terminal flowers (a).
(i) What is the phenotype and genotype of the F1 generation if a plant bearing pure axial flowers is crossed with a plant bearing pure terminal flowers?
(ii) Draw a Punnett square board to show the gametes and offsprings when both the parent plants are heterozygous for axial flowers.
(iii) What is the phenotypic ratio and genotypic ratio of the above cross shown in (ii)?
(iv) State Mendel’s Law of Dominance.
(v) Name two genetic disorders commonly seen in human males.
Choose the correct answer:
The contrasting characters used by Mendel are called _____
In heterozygous condition, both the alleles are expressed in ______
Mendel studied interitance of seven pairs of traits in pea which can have 21 possible combinations. If you are told that in one of these combinations, independent assortment is not observed in later studies, your reaction will be.
The genes controlling the seven pea characters studied by Mendel are now known to be located on how many different chromosomes?
The inheritance pattern of a gene over generations among humans is studied by the pedigree analysis. Character studied in the pedigree analysis is equivalent to ______.
The colour based contrasting traits in seven contrasting pairs, studied by Mendel in pea plant were ______.
Which is the one characteristic of the parents that can be inherited by their children?
Two pea plants one with round green seeds (RRyy) and another with wrinkled yellow (rrYY) seeds produce F1 progeny that have round, yellow (RrYy) seeds. When F1 plants are selfed, the F2 progeny will have new combination of characters. Choose the new combination from the following
- Round, yellow
- Round, green
- Wrinkled, yellow
- Wrinkled, green
Give the basic features of the mechanism of inheritance.
