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प्रश्न
What is a gene? How is it related to heredity?
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उत्तर
Genes are hereditary units located on a chromosomal thread. A gene can be defined as the “ultimate unit of recombination, mutation, and self-reproduction”. They are responsible for various characteristics externally shown by the plants and animals. A single gene may affect one or more characteristics of offsprings.
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संबंधित प्रश्न
A cross used to verify the unknown genotype of the F1 hybrid is a ______.
Mutation alerts the hereditary material. Give reasons.
Differentiate Between Homozygous shows Heterozygous.
Explain the Term Crossing-over.
Give Technical Term:
Differences occurring within offsprings of the same progeny.
Give Technical Term:
A virus with DNA as heredity material.
Give Technical Term:
A single egg was fertilized by a single sperm. But twins derived from that egg were born. What is the name of such type of twins?
Complete the following sentence with appropriate word:
The physical expression of genes is called _________.
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.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Mutation can be brought about artificially.
Write the functional activity of the following structure:
Autosomes
Multiple choice question.
In a dihybrid cross, F2 generation offsprings show four different phenotypes while the genotypes are _______.
Multiple choice question.
A cross between an individual with an unknown genotype for a trait with recessive plant for that trait is _______.
Give any two points of difference between homozygous and heterozygous.
Identify the genotype of peacock.
A normal visioned woman whose father is colourblind married a normal visioned man. What are the probabilities of her sons or daughters to be colourblind? Explain with the help of Punnett square.
Which one of the following character is recessive in case of a pea plant?
