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प्रश्न
Name any two genetic diseases in humans.
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उत्तर
Two genetic diseases in humans are:
- Haemophilia
- Thalassemia
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संबंधित प्रश्न
A cross used to verify the unknown genotype of the F1 hybrid is a ______.
Explain the Term Variation.
Give Technical Term:
Differences occurring within offsprings of the same progeny.
Complete the following sentence with appropriate word:
The physical expression of genes is called _________.
Explain a dihybrid cross with suitable example and checker board method.
The word chromosome was coined by
Explain test cross with suitable example and state its ratios.
A recessive factor is altered by the presence of a dominant factor.
Hybrid is an offspring from a cross between genetically different parents.
In a dihybrid cross with contrasting characters, the number of different genotypes obtained in F2 generation are ______.
Identify the genotype of peacock.
______ 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 ________.
Define Alleles.
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?
