Plant Genetics MCQs

Question 1

In case of incomplete dominance, the phenotypic ratio of a monohybrid cross will be

Accepted Answer

1:2:1

Answer

3:1:1

Answer

1:3:1

Answer

1:1:2

Question 2

In the meiotic cell divison in daughter cells are produced by two successive division in which

Accepted Answer

first division is equational, second is reductional

Answer

first division is reductional and second is equational

Answer

both divisions are reductional

Answer

both divisions are equational

Question 3

What is the approximate size (in kb) of the melon mitochondrial genome?

Accepted Answer

2400 kilobase

Answer

600 kilobase

Answer

1200 kilobase

Answer

3000 kilobase

Question 4

When an organism has a life cycle with alternation of generations, the haploid generation is the

Accepted Answer

gametophyte

Answer

zygote

Answer

gamete

Answer

sporophyte

Question 5

When do kinetochore microtubules pull chromosomes towards opposite spindle poles?

Accepted Answer

In anaphase A

Answer

In anaphase B

Answer

In metaphase

Answer

In telophase

Question 6

During meiosis crossing over takes place at

Accepted Answer

pachytene stage

Answer

zygotene stage

Answer

diplotene stage

Answer

diakinesis stage

Question 7

Which of the following transposable elements are not found in plants?

Accepted Answer

L1

Answer

Ac

Answer

Tam3

Answer

All are found

Question 8

A plasmid used to introduce BT toxin into a plant cell

Accepted Answer

carries a bacterial gene with a plant promoter

Answer

carries an antibiotic resistance gene that makes the plant resistant to antibiotics

Answer

causes the plant to produce opines

Answer

is toxic for the plant cell

Question 9

The homologous chromosomes follow the process of synopsis in the

Accepted Answer

zygotene

Answer

leptotene

Answer

pachytene

Answer

diplotene