Advertisements
Advertisements
Question
Explain the Term Variation.
Solution
Variation: Occurrence of differences in the progeny of the same parents and individuals of the same species.
APPEARS IN
RELATED QUESTIONS
Which phoenomenon gives 2 : 1 ratio instead of 3 : 1 ratio? Describe with graphical representation.
Choose the correct answer:
Mendel was born in __________
Mutation alerts the hereditary material. Give reasons.
Give the Phenotype of the F2 generation.
Explain the Term Dominance.
Explain the Term Crossing-over.
Name the following:
The genetic composition of an organism.
Give Technical Term:
A virus with DNA as heredity material.
Give Technical Term:
The individuals having dissimilar pairs of genes.
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.
______ type/s of gametes is/are expected to be formed by the organism with genotype AABBCC.
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 ______
During a dihybrid cross with contrasting characters in the F2 generation, parental genotypes will appear in ______.
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 |
A typical dihybrid cross is carried outbetween true breeding plant with yellowround seeds and a true breeding plant withgreen wrinkled seeds. With appropriatesymbol write the genotypes of —
- Homozygous dominant and recessive parents.
- Gametes produced by both the parents.
- Gametes produced by the F, hybrid. (3)
What is dihybrid cross?
Define the following term:
Gene
Name any two genetic diseases in humans.
