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प्रश्न
Define the following term:
Gene
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उत्तर
Genes are specific sequences of nucleotides on a chromosome that encode particular proteins which are expressed in the form of some particular feature of the body. They are the units of heredity which are transferred from parents to offspring and are responsible for some specific characteristics of the offspring.
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संबंधित प्रश्न
What is crossing-over? What are the factors affecting it?
Mutation alerts the hereditary material. Give reasons.
Explain the term Alleles.
Complete the following sentence with appropriate word:
The dissimilar pairs of genes present in an individual are known as _______________.
Complete the following sentence with appropriate word:
Upon _______the diploid condition is restored.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Most genetic diseases in man are recessive in character.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
DNA has a double-helical structure.
Choose the Odd One Out
Enlist dominant and recessive characters in pea plant with respect to the position of flower, colour of seed and colour of a pod in tabulated form.
Each gamete has only one allele of a gene.
Identify the possible genotypic ratio in F2 generation if a plant producing red flowers (RR) is crossed with another plant of the same species that produces white flower (rr).
The appearance of new combinations in the F2 generation of a dihybrid cross proves the law of ______.
Identify the genotype of a round seeded tall plant which when crossed with a plant of similar genotype produces the following percentage of phenotypes:
(tall round = 56.25 %, tall wrinkled = 18.75 %, dwarf round = 18.75 %, dwarf wrinkled = 6.25 %.)
Which one of the following genotype will yield only one type of gamete?
Two alternative forms of genes or alleles are located on ______.
How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits?
A pair of corresponding chromosomes of the same shape, size and one from each parent is called ______.
