12th Biology
12th Bio Botany one marks – Lesson 2 – Online Test | Classical Genetics
12th Bio Botany one marks - Lesson 2 - Online Test | Classical Genetics
12th Bio Botany one marks – Lesson 2 – Online Test | Classical Genetics Click Here Biology Full Online Test Both Bio Botany and Bio zoology.
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#1. Extra nuclear inheritance is a consequence of presence of genes in __________
#2. In order to find out the different types of gametes produced by a pea plant having the genotype AaBb, it should be crossed to a plant with the genotype __________
#3. How many different kinds of gametes will be produced by a plant having die genotype AABbCC?
#4. Which one of the following is an example of polygenic inheritance?
#5. In Mendel’s experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F2 generation of the cross RRYY xrryy?
#6. Test cross involves __________
#7. In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seed pant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in generation?
#8. The genotype of a plant showing the dominant phenotype can be determined by __________
#9. Select the correct statement from the ones given below with respect to dihybrid cross
#10. Which Mendelian idea is depicted by a cross in which the F1 generation resembles both the parents
#11. Fruit colour in squash is an example of __________
#12. In his classic experiments on Pea plants, Mendel did not use __________
#13. The epistatic effect, in which the hybrid cross 9:3:3:1 between AaBb Aabb is modified as
#14. In a test cross involving F1 dihybrid flies, more parental type offspring were produced than the recombination type offspring. This indicates __________
#15. The genes controlling the seven pea characters studied by Mendel are known to be located on h6w many different chromosomes?
#16. Which of the following explains how progeny can posses the combinations of traits that none of the parent possessed?
#17. “Gametes are never hybrid”. This is a statement of __________
#18. Gene which suppresses other genes activity but does not lie on the same locus is called as __________
#19. Pure tall plants are crossed with pure dwarf plants. In the F1 generation, all plants were tall. These tall plants of generation were selfed and the ratio of tall to dwarf plants obtained was 3:1. This is called __________
#20. The dominant epistatis ratio is _________
#21. Select the period for Mendel’s hybridization experiments.
#22. Among the following characters which one was not considered by Mendel in his experimentation pea?
