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Question
Explain the Term Dominance.
Solution
Dominance: The character expressed in first-generation when any two individuals of contrasting characters breed is dominant and the phenomenon is called dominance.
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RELATED QUESTIONS
Give the Phenotypic and Genotypic ratio of the F2 and F2 generation.
Explain the term Alleles.
Complete the following sentence with appropriate word:
In mammals, the female is homozygous while the male is _________.
Multiple Choice Question
When an individual has both the genes of a contrasting character, it is said to be:
Multiple choice question.
In a dihybrid cross, F2 generation offsprings show four different phenotypes while the genotypes are _______.
Each gamete has only one allele of a gene.
Using ______, the production of gametes by the parents, the formation of zygotes, the F1 and F2 plants can be understood.
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 %.)
The percentage of each gamete out of four different types of gametes produced by the F1 dihybrid 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.
Parents of blood group i and AB cannot have a child of blood group AB because ______.
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?
What is dihybrid cross?
Name any two genetic diseases in humans.
