Class 10 Biology - Heredity (Worksheet) #heredity #class10Biology #eduvictors #worksheets

Class 10 Biology - Heredity (Worksheet)

Fill in the blanks with suitable word(s).

1. The generation resulting immediately from a cross of the first set of parents is called ____________.

2. All cells forming the body of an organism, except the reproductive cells are called _________ cells.

3. A type of crossing in which only one pair of contrasting characters is considered is called _________ cross.

4. Cell having two sets of chromosomes, one of paternal origin, the other maternal is called ______ cell. 

5. A long thread-like structure in the nucleus. It appears during cell division and carries genes. It is known as _______.

6. Reproductive cells containing only one set of dissimilar chromosome are called _________.

7. __________is known as Father of Genetics.

8. The process through which characters or traits pass from one generation to another is called _______.

9. An allele/trait, whose phenotype (physical appearance) will be expressed even in the presence of another allele of that gene. It is represented by a capital letter. It is called _________.

10. Mendel studied seven pairs of contrasting characters in pea plants to study heredity. The scientific name of the pea plan is _________.

11. In monohybrid cross, Mendel obtained genotype ratio as _________.

12. In dihybrid cross experiment, based on results Mendel concluded that two trails are inherited _________.

13. Expression of traits is controlled by cellular ______ which carries many genes. Each gene carries information for one particular protein.

14. In human beings, there are 23 pairs of chromosomes, out of which 22 pairs are ________ and one pair is sex-chromosomes.

15. If a sperm carrying X-chromosome fertilises the egg, the child born will be a _________.

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Answers:

1. F1 progeny or F1 generation

2. somatic cells

3. monohybrid

4. diploid

5. chromosome

6. gametes

7. Gregor Johann Mendel.

8. inheritance

9. dominant 

10. Pisum sativum

11. 1:2:1

12. independently.

13. DNA

14. autosomes

15. female (XX)

👉See Also:

Ch 9 - Heredity & Evolution (NCERT Solution, Q & A, Study notes)
Ch 9 - Heredity & Evolution (MCQs) or Eduvictors Quiz
Ch 9 - Heredity & Evolution (Important Terms and Definitions)
Heredity and Evolution - Origin Of Life On Earth (Concept Points)
Ch 9 - Heredity and Evolution - Unit Test Paper