Advertisements
Advertisements
प्रश्न
Explain the Term Mutation.
Advertisements
उत्तर
Mutation: Any change brought about into the genetic composition through external or internal factors.
APPEARS IN
संबंधित प्रश्न
What is crossing-over? What are the factors affecting it?
Explain the Term Heredity.
Explain the Term Heterosome.
Complete the following sentence with appropriate word:
The physical expression of genes is called _________.
Complete the following sentence with appropriate word:
The dissimilar pairs of genes present in an individual are known as _______________.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
A female is responsible for the sex of the progeny.
Write the functional activity of the following structure:
Autosomes
Multiple Choice Question
Genetics is a branch of biology dealing with:
The word chromosome was coined by
Hybrid is an offspring from a cross between genetically different parents.
______ type/s of gametes is/are expected to be formed by the organism with genotype AABBCC.
The percentage of each gamete out of four different types of gametes produced by the F1 dihybrid will be ________.
A pea plant with the genotype YyRr is crossed with another pea plant with the genotype yyrr. The expected phenotypic ratio of individuals formed will be ______
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 of the following is the number of alleles for blood group in an individual?
Match the items given in Column I with those listed in Column II. Choose the answer with correct combination of alphabets of the two columns.
| Column I | Column II |
| A. Monohybrid cross | 1. T and t |
| B. Test cross | 2. TT |
| C. Alleles | 3. TT × tt |
| D. Homozygous tall | 4. tt |
| 5. Tt × tt |
In which region of chromosomes does crossing over take place?
Name any two genetic diseases in humans.
