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Plant Breeding & Genetics Quiz 5

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Plant Breeding & Genetics Quiz 5

1 / 50

The smallest unit of recombination in the chromosome is called___________________?

2 / 50

Top cross was first suggested by__________________?

3 / 50

In meiosis homologous chromosomes separate from each other in ______________________?

4 / 50

RNA contains__________________?

5 / 50

The slow process by which new types of organisms arise from existing forms by genetics variation is called_______________________?

6 / 50

One of the following is not an advantage of genetic engineering___________________?

7 / 50

Plants having monoecious flowers are found in____________________?

8 / 50

Artificial vegetative reproduction is done by_________________?

9 / 50

If the cell of an organism (heterozygous) for two pairs of genes represented by Aa, Bb, undergoes meiosis then the possible genotype of gametes are________________?

10 / 50

The experimental design which controls fertility variation in two directions in known as_________________?

11 / 50

Name chromosome was coined by ___________________?

12 / 50

Mendel was lucky to use pea plants for genetical experiments because__________________?

13 / 50

The cell theory was propounded by____________________?

14 / 50

Ribosomes are important because they help in __________________?

15 / 50

The carrier of genetic information is __________________?

16 / 50

If diploid chromo me number in flowering plant is 8 then 4 chromosomes will be present in_________________?

17 / 50

Conservation of germplasm under natural condion is called_________________?

18 / 50

The smell in onion bulb is due to________________?

19 / 50

The concept of diallel selective mating was developed by____________________?

20 / 50

The chief function of the centro mere concerns___________________?

21 / 50

When pollination and fertilization occur in unopened flower bud it is known as__________________?

22 / 50

Which of the cell organelle is considered to be rich in catabolic enzymes_____________________?

23 / 50

Electron microscope was invented by _________________?

24 / 50

The term gene was coined by__________________?

25 / 50

Occurrence of cells in diploid organisms containing multiples of the 2n genomes is known as____________________?

26 / 50

A transonic individual has chromosome number____________________?

27 / 50

In crop improvement programmed haploids are of great importance because they__________________?

28 / 50

Organisms that can synthesize all their substances from simple inorganic molecules are termed as____________________?

29 / 50

In sunflower, production of foundation seed requires as isolation___________________?

30 / 50

A place or area where maximum variability of crop plants is observed__________________?

31 / 50

Genetic correlation between two variables may be due to___________________?

32 / 50

Ratio of additive variance to phenotypic variance is called___________________?

33 / 50

Chemically DNA differs from RNA by __________________?

34 / 50

A species or type of a plant derived from doubling the chromosome of the F1 hybrid of two known species is known as__________________?

35 / 50

A healthy plant not selling seed may be due to____________________?

36 / 50

Theory of mutation was given by___________________?

37 / 50

Which of the following had great influence on Drawing during during formulation of his theory of natural selection_________________?

38 / 50

Parthenocarpy is the production of____________________?

39 / 50

Strands of DNA are bounded by___________________?

40 / 50

If a plant is heterozygousand is designated (BbMm)and produces two kinds of gametes either (BM)or (bm), then the possibility of (bm) gametes fertilizing either (BM) or (bm) is_________________?

41 / 50

System of mating were given by_________________?

42 / 50

The nucleic acids comprise of_________________?

43 / 50

The change in chromosome number which involves the entire set of genome is known as______________?

44 / 50

The term recurrent selection was coined by_________________?

45 / 50

Gynandromorphy in Drosophila because of_________________?

46 / 50

The spread of genes from one breeding population to another by migration which may result in changes in gene frequency is called________________?

47 / 50

The term heterosis was coined by____________________?

48 / 50

The term vertical resistance and horizontal resistance were first used by________________________?

49 / 50

The term homeostasis was coined by_____________________?

50 / 50

International institute for Tropical Agriculture is located at______________________?

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