BOTANY : Genetics Mock Test

🟥 BOTANY : Genetics Mock Test

🟥 QUESTIONS :35

🟥 TIME : 20 MINS

1 / 35

1)

Satellite DNA naming by
-

A) Heitz -

B) Navashin -

C) Watson & Crick -

D) Waldeyer

2 / 35

2)

Stop codon of mitochondrial genome
-

A) AGA -

B) AGG -

C) UGA -

D) Both A and B

3 / 35

3)

Choose the wrong sentence about Extrachromosomal inheritance
-

A) Characters transmitted only from mother -

B) In reciprocal cross , yield will entirely different

C) Doesn’t follow Mendelian principle

D) It have its own protein and synthetic machinery for replication --

4 / 35

4)

The term plasma genes given by
-

A) Richard altma

B) - Carl correns

C) - Winkler -

D) n Heitz

5 / 35

5)

: How many genes are present in cpDNA ]
-

A) 122 -

B) 120

C) - 37

D) - 47

6 / 35

6)

Number of genes present in mtDNA
-

A) 120

B) - 35 -

C) 37

D) - 22

7 / 35

7)

Which genetic codon code for Aminoacid tryptophan in mitochondria of mammals
-

A) UGG -

B) UGA -

C) AUA

D) - UUG

8 / 35

8)

: Mitochondrial yeast mutants are called
-

A) Pectatite

B) - Petite

C) - Poky -

D) Focky

9 / 35

9) Stop codon of mitochondrial genome

A) - AGA -

B) AGG -

C) UGA -

D) Both A and B

10 / 35

10)

: What is false about cytoplasmic inheritance
-

A) Controlling genes located in cytoplasmic organelles

B) - Inheritance is non mendelian -

C) Allelic segregation is absent from F1 generation onwards

D) Somatic segregation of allele is very rare during mitosis -

11 / 35

11)

The role of mitochondria in extrachromosomal inheritance was first recognized by
-

A) Winkler

B) - Levitsky

C) - Jenkins -

D) Ephrussi

12 / 35

12)

Complete linkage is found in
-

A) Female Drosophila -

B) Snakes -

C) Birds -

D) Male Drosophila

13 / 35

13)

The basic proteins of the nucleus are
-

A) Nucleoprotamines -

B) Nucleohistones

C) - Both a and b -

D) None of these

14 / 35

14)

The expression of Holandric genes causes the following genetic trait
-

A) Huntington's disease

B) - Haemophilia

C) - Down' s syndrome -

D) Hypertrichosis

15 / 35

15) Male sterile lines were first discovered in

A) - Wheat

B) - Maize

C) - Onion

D) - Sunflower

16 / 35

16)

Who discovered cytoplasmic inheritance
-

A) Correns -

B) Rhoades -

C) Mendel -

D) Morgan

17 / 35

17)

Extra nuclear genes are found in
-

A) Plastids, not inherited -

B) Mitochondria, inherited from male -

C) Plasmid, not inherited -

D) Mitochondria, inherited from female

18 / 35

18)

Limnaea shell coiling is due to
-

A) Maternal inheritance -

B) Cytoplasmic inheritance

C) - Extra nuclear inheritance

D) - All the above

19 / 35

19) mitochondrial inheritance include...

📍cytoplasmic male sterility in plants,
📍pokyness in Neurospora,

📍petite in yeast

A) none

B) all the above

20 / 35

20) The DNA present in the cytoplasm and not on chromosomes which follows the non-Mendelian pattern of inheritance is known as

A) extrachromosomal inheritance

B) cytoplasmic inheritance

C) non-mendelian inheritance

D) All of these

21 / 35

21) First reported non- mendelian inheritance in Mirabilis Jalapa plastid DNA....

A) Carl Correns in 1908

B) M M. Rhoades in 1933

C) Boris Ephrussi in 1949

22 / 35

22) Cytoplasmic inheritance in most cases

A) - Biparental and paternal -

B) Uniparental and maternal

C) Uniparental

D) biparental

23 / 35

23)

What is false about cytoplasmic inheritance
-

A) Controlling genes located in cytoplasmic organelles

B) - Somatic segregation of allele is very rare during mitosis -

C) Inheritance is non mendelian

D) - Allelic segregation is absent from F1 generation onwards

24 / 35

24)

Mitochondria of poky and petite lack which respiratory enzyme
-

A) Cytochrome reductase

B) - Cytochrome oxidase

C) - Cytokinase

D) - Oxidoreductase

25 / 35

25) Neurospora mutants are called

A) - Okky -

B) Mokky

C) - Petite -

D) Poky

26 / 35

26)

The theory of endosymbiosis is first proposed by
-

A) Mereschkowsky -

B) Altmann -

C) Margulis

27 / 35

27) The most abundant RNA of the cell is

A) t RNA

B) r RNA

C) mRNA

28 / 35

28) The recognation promorter region of lac operon is sometime reffered to as

A) TATABOX

B) Pribnow box

C) Cga box

D) CRPbox

29 / 35

29) The codon for aminoacid Tryptophan

A) ACC

B) TAC

C) ACA&ACG

30 / 35

30) TheDNA found in all living beings is

A) left handed DNA

B) right handed DNA

C) Z-DNA

31 / 35

31) The number of basepairs per turn of helix of DNA molecule

A) 20

B) 100

C) 80

D) 10

32 / 35

32) RNG Always occurs in

A) A form only

B) B- form only

C) both A and B forms

D) Z-form only

33 / 35

33) nitrogen bases in DNA are

A) AUGC

B) UTGC

C) ATGC

D) ATUC

34 / 35

34) The diameter of a DNA molecule is

A) 50 A

B) 20A

C) 100A

D) 200A

35 / 35

35) The strands of DNA are

A) similar in nature and complementary

B) Antiparellel and complementary

C) Basically different in nature

D) antiparellel and non complementary

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BOTANY : Genetics Mock Test

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