MEDIUM
10th CBSE
IMPORTANT
Earn 100

When 480 plants are produced in the F2 generation of dihybrid cross made with pure breeding plants, the total number of plants with parental combinations obtained is

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Important Questions on Genetics

MEDIUM
10th CBSE
IMPORTANT
Pearson Foundation Series Biology>Chapter 9 - Genetics>PRACTICE QUESTIONS>Q 38
Red (RR) flower plant is crossed with white (rr), all the offspring were pink, this indicates that R gene is
MEDIUM
10th CBSE
IMPORTANT
Pearson Foundation Series Biology>Chapter 9 - Genetics>PRACTICE QUESTIONS>Q 39
Two snapdragon plants with pink flower were hybridized. The F1 plants produced red, pink, and white flowers in the proportion of 1 red, 2 pink, and 1 white. What could be the genotype of the two plants used for hybridization? (Red flower colour-RR white-rr)
EASY
10th CBSE
IMPORTANT
Pearson Foundation Series Biology>Chapter 9 - Genetics>PRACTICE QUESTIONS>Q 40
Predict the number of squares in the Punnett square of a trihybrid cross.
MEDIUM
10th CBSE
IMPORTANT
Pearson Foundation Series Biology>Chapter 9 - Genetics>PRACTICE QUESTIONS>Q 41
In honeybee, males are
MEDIUM
10th CBSE
IMPORTANT
Pearson Foundation Series Biology>Chapter 9 - Genetics>PRACTICE QUESTIONS>Q 42
In grasshopper, the total number of chromosomes in male is
MEDIUM
10th CBSE
IMPORTANT
Pearson Foundation Series Biology>Chapter 9 - Genetics>PRACTICE QUESTIONS>Q 43
In which of the following organisms, female heterogamety is observed? (A) Peacock (B) Crocodile (C) Butterfly (D) Rabbit (E) Fish
MEDIUM
10th CBSE
IMPORTANT
Pearson Foundation Series Biology>Chapter 9 - Genetics>PRACTICE QUESTIONS>Q 44

Identify the feature for which genes are present in both the sexes, but is predominantly sex specific in humans.

(A) Bald head 

(B) Secretion of milk

(C) Skin colour 

(D) Colour blindness

(E) Development of mustache.

MEDIUM
10th CBSE
IMPORTANT
Pearson Foundation Series Biology>Chapter 9 - Genetics>PRACTICE QUESTIONS>Q 45

Identify the diseases that are not sex specific.

 (A) Hypertrichosis

(B) Hemophilia

(C) Phenylketonuria

(D) Pentadactyly 

(E) Muscular dystrophy.