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What is epistasis?...

What is epistasis?

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### Step-by-Step Solution: 1. **Definition of Epistasis**: - Epistasis is a genetic phenomenon where the expression of one gene is suppressed or masked by another non-allelic gene. 2. **Etymology of the Term**: - The term "epistasis" is derived from two Greek words: "epi" meaning "upon" and "stasis" meaning "stable". This implies that one gene is stable upon or influences the expression of another gene. ...
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ICSE-PRINCIPLES OF INHERITANCE AND VARIATION-PRACTICE QUESTIONS ( VERY SHORT ANSWER TYPE QUESTIONS)
  1. List any two mechanisms by which a variant genotype is produced.

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  2. Give the number of chromosomes in Drosophila melanogaster.

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  3. What is epistasis?

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  4. Which term did Mendel use for what we now call the genes?

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  5. Mendel observed two kinds of ratios 3:1 and 1: 2:1 in F2 generations ...

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  6. How many pairs of homologous chromosomes are present in male Drosophil...

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  7. What do you understand by the term aneuploidy?

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  8. Nondisjunction may lead to a zygote containing XXY sex chromosomes, wh...

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  9. What is meant by chromosomal mutation?

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  10. What are codominant alleles? Give one example.

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  11. How many autosomes are found in a single mature human sperm?

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  12. Give the scientific name and also the common name of the plant in whic...

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  13. The map distance in a certain organism between genes A and B is 8 unit...

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  14. Name the mechanism by which new alleles appear in a population.

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  15. Which of the following diseases could be avoided by analysing the pedi...

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  16. Which of the following conditions could be detected by karyotyping the...

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  17. Which of the following disorders is a haemoglobin based genetic proble...

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  18. Under what circumstances it is possible for a father and a son to suff...

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  19. Give the meaning of the term allele.

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  20. At which particular stage of chromosomes do errors like deletion of ge...

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