Heredity Class 10 Science MCQ Quiz – Test Your Knowledge

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Are you preparing for your CBSE Class 10 Science exam? Boost your understanding of Heredity with this engaging MCQ quiz. This chapter covers inheritance of traits, Mendel’s laws, sex determination, and variations—key topics for board exams.

About the Quiz

Chapter Name: Heredity
Subject: Science (Biology)
Book: NCERT Class 10 Science
Question Type: Multiple Choice Questions (MCQs)
Leaderboard: Yes (Compete with Others!)

Why Take This Quiz?

✔ Helps in quick revision for board exams
✔ Covers important NCERT-based questions
✔ Leaderboard feature to track your performance

Click Below to Start the Quiz!

Chapter 8 - Heredity

1 / 15

The genotype of offspring formed from Tt x tt will be

Tt and tt

Only TT

Only tt

TT and tt

2 / 15

Which of the following is heterozygous?

TTRR

ttrr

3 / 15

If a round, green-seeded pea plant (RR yy) is crossed with a wrinkled, yellow-seeded pea plant, (rr YY) the seeds produced in the F1 generation are

Round and yellow

Wrinkled and green

Round and green

Wrinkled and yellow

4 / 15

A heterozygous red-eyed female Drosophila mated with a white-eyed male would produce _____.

Half red and half white-eyed females and all white-eyed males in the F1

Half red and half white-eyed females as well as males in the F1

Red-eyed females and white-eyed males in the F1

White-eyed females and red-eyed males in the F1

5 / 15

In an asexually reproducing species if trait X exists in 5% of a population and trait Y exists in 70% of the same population, which of the two traits is likely to have arisen earlier?

Insufficient information

Trait X

Trait Y

6 / 15

Which statement about the genotypes of organisms is correct?

The dominant phenotype must be heterozygous

Dominant alleles are only found in homozygotes

One recessive allele always causes a recessive phenotype

Recessive phenotypes must be homozygous

7 / 15

A recessive homozygote is crossed with a heterozygote of the same gene. What will be the phenotype of the F1 generation?

50 % dominant, 50 % recessive

All dominant

25 % dominant, 50 % heterozygous, 25 % recessive

75 % dominant, 25 % recessive

8 / 15

A zygote that has an X-chromosome inherited from the father will develop into a _____.

Girl

Either boy or girl

X-chromosome does not determine the sex of a child

Boy

9 / 15

Two pink-colored flowers on crossing resulted in 1 red, 2 pink, and 1 white flower progeny. The nature of the cross will be

No fertilization

Cross-fertilization

Double fertilization

Self-pollination

10 / 15

Assertion (A): Height in pea plants is controlled by the efficiency of enzymes and is thus genetically controlled.

Reason (R): Cellular DNA is the information source for making proteins in the cell.

Both A and R are true and R is the correct explanation of A

A is true but R is false

A is false but R is true

Both A and R are true and R is not the correct explanation of A

11 / 15

Which of the following statements is incorrect?

For every molecule of fat there is a gene.

For the production of every enzyme there is a gene.

For every protein there is a gene.

For every hormone there is a gene.

12 / 15

Assertion (A): Offsprings produced by sexual reproduction show variation.

Reason (R): Each offspring produced by sexual reproduction inherits all the genes from each parent.

Both A and R are true and R is the correct explanation of A

Both A and R are true and R is not the correct explanation of A

A is true but R is false

A is false but R is true

13 / 15

A homozygous dominant guinea pig with black fur is crossed with a homozygous guinea pig with white fur. The F1 generation is crossed with itself.

What percentage of F2 generation is expected to show a white fur coat?

50 %

75 %

25 %

100 %

14 / 15

The height of a plant is regulated by:

Growth hormones under the influence of the enzymes coded by a gene.

DNA which is directly influenced by growth hormone.

Genes that regulate the proteins directly.

Growth hormones directly under the influence of a gene.

15 / 15

Two pea plants one with round green seeds (RRyy) and another with wrinkled yellow (rrYY) seeds produce F1 progeny that have round, yellow (RrYy) seeds. When F1 plants are selfed, the F2 progeny will have a new combination of characters. Choose the new combination from the following.

Round, yellow

Round, green

Wrinkled, yellow

Wrinkled, green

II and III

I and IV

I and II

I and III

Your score is

The average score is 55%

Leaderboard – Top Scorers

Check out the highest scorers below!

Pos.	Name	Score	Duration	Points
1	Vishal	100 %	44 seconds	15
2	AS	100 %	1 minutes 4 seconds	15
3	Praniii...	100 %	1 minutes 4 seconds	15
4	Subhankar	100 %	1 minutes 7 seconds	15
5	arnavi	100 %	1 minutes 10 seconds	15
6	lily	100 %	1 minutes 16 seconds	15
7	jasmeem	100 %	1 minutes 18 seconds	15
8	Dhruv	100 %	1 minutes 25 seconds	15
9	..	100 %	1 minutes 39 seconds	15
10	Ani	100 %	1 minutes 49 seconds	15
11	Ddededede	100 %	1 minutes 56 seconds	15
12	Varun	100 %	1 minutes 58 seconds	15
13	chauhan	100 %	2 minutes 3 seconds	15
14	Priyam	100 %	2 minutes 25 seconds	15
15	harshita	100 %	2 minutes 45 seconds	15
16	varun	100 %	2 minutes 51 seconds	15
17	Madhu Sharma	100 %	4 minutes 47 seconds	15
18	varun	100 %	5 minutes 5 seconds	15
19	,,	100 %	13 minutes 4 seconds	15
20	Alll	93 %	1 minutes	14
21	D	93 %	1 minutes 2 seconds	14
22	Eunice	93 %	1 minutes 7 seconds	14
23	Paro	93 %	1 minutes 16 seconds	14
24	vv	93 %	1 minutes 25 seconds	14
25	Harsh jain	93 %	1 minutes 36 seconds	14
26	Riya	93 %	1 minutes 38 seconds	14
27	Vishal	93 %	1 minutes 41 seconds	14
28	Anjali	93 %	2 minutes 17 seconds	14
29	Sarthak	93 %	2 minutes 20 seconds	14
30	kt	93 %	2 minutes 33 seconds	14
31	Vaishnavi	93 %	3 minutes 11 seconds	14
32	Harsh jain	93 %	4 minutes 15 seconds	14
33	Mani	93 %	4 minutes 48 seconds	14
34	M	93 %	5 minutes 11 seconds	14
35	Akshita	93 %	6 minutes 28 seconds	14
36	rishabh	93 %	7 minutes 13 seconds	14
37	anu	93 %	8 minutes 27 seconds	14
38	Jaiha	93 %	8 minutes 43 seconds	14
39	xyz	93 %	8 minutes 49 seconds	14
40	kl	93 %	17 minutes 26 seconds	14
41	Subhankar	87 %	55 seconds	13
42	Manuela	87 %	1 minutes 18 seconds	13
43	lara	87 %	1 minutes 27 seconds	13
44	Aria	87 %	1 minutes 54 seconds	13
45	Hh	87 %	2 minutes 6 seconds	13
46	///	87 %	2 minutes 56 seconds	13
47	Mishwa	87 %	3 minutes 3 seconds	13
48	Ramya	87 %	3 minutes 30 seconds	13
49	Pranii	87 %	3 minutes 31 seconds	13
50	Varun	87 %	3 minutes 35 seconds	13
51	heheehe	87 %	3 minutes 56 seconds	13
52	varun	87 %	4 minutes	13
53	Anushka Selot	87 %	4 minutes 8 seconds	13
54	jasmeen	87 %	4 minutes 19 seconds	13
55	Rc	87 %	4 minutes 39 seconds	13
56	S	87 %	5 minutes 3 seconds	13
57	T	87 %	8 minutes 59 seconds	13
58	Ruhi	87 %	9 minutes 2 seconds	13
59	Manpreet	87 %	9 minutes 21 seconds	13
60	Soyam	87 %	9 minutes 23 seconds	13
61	tanisha	87 %	10 minutes 7 seconds	13
62	dhruv	87 %	12 minutes 33 seconds	13
63	Alyasha	87 %	13 minutes 46 seconds	13
64	sudipta	87 %	15 minutes 29 seconds	13
65	Suhani	80 %	1 minutes 6 seconds	12
66	Aka	80 %	1 minutes 31 seconds	12
67	ANJALI PANDEY	80 %	1 minutes 34 seconds	12
68	Nishant	80 %	1 minutes 53 seconds	12
69	mahi	80 %	1 minutes 55 seconds	12
70	darsh	80 %	1 minutes 56 seconds	12
71	Ale	80 %	1 minutes 58 seconds	12
72	uuuy	80 %	2 minutes 23 seconds	12
73	,	80 %	3 minutes 42 seconds	12
74	aa	80 %	3 minutes 43 seconds	12
75	Aa	80 %	4 minutes 9 seconds	12
76	harshita dua	80 %	6 minutes 37 seconds	12
77	UMA	80 %	6 minutes 37 seconds	12
78	Arko	80 %	6 minutes 42 seconds	12
79	Mko	80 %	7 minutes 5 seconds	12
80	8j8j	80 %	7 minutes 9 seconds	12
81	mihi	80 %	7 minutes 25 seconds	12
82	Kashish	80 %	7 minutes 45 seconds	12
83	just	80 %	8 minutes 25 seconds	12
84	Ayushman	80 %	9 minutes 34 seconds	12
85	sri	80 %	9 minutes 35 seconds	12
86	rr	80 %	9 minutes 40 seconds	12
87	xd	80 %	9 minutes 42 seconds	12
88	mendel	80 %	10 minutes 15 seconds	12
89	Partigya	80 %	12 minutes 49 seconds	12
90	Sesd	80 %	15 minutes 42 seconds	12
91	Jkl	80 %	25 minutes 22 seconds	12
92	Djrjrj	73 %	1 minutes 48 seconds	11
93	hetanshi	73 %	1 minutes 53 seconds	11
94	Report	73 %	1 minutes 54 seconds	11
95	Shakti	73 %	2 minutes 13 seconds	11
96	Jhsh	73 %	2 minutes 37 seconds	11
97	Priya	73 %	2 minutes 45 seconds	11
98	Harshita	73 %	3 minutes 42 seconds	11
99	Anuj	73 %	4 minutes 18 seconds	11
100	Welvet	73 %	5 minutes 15 seconds	11
101	anvita	73 %	5 minutes 17 seconds	11
102	R	73 %	5 minutes 21 seconds	11
103	siya the great	73 %	5 minutes 43 seconds	11
104	Ananya	73 %	5 minutes 49 seconds	11
105	Hlcoupf	73 %	6 minutes	11
106	Am	73 %	6 minutes 8 seconds	11
107	hansika	73 %	6 minutes 29 seconds	11
108	Shrushti	73 %	6 minutes 38 seconds	11
109	arjun	73 %	6 minutes 54 seconds	11
110	Ws	73 %	8 minutes 12 seconds	11
111	gdsgds	73 %	8 minutes 37 seconds	11
112	Bhumika Singh	73 %	9 minutes 1 seconds	11
113	Priyanshu	73 %	9 minutes 2 seconds	11
114	Harmeet	73 %	12 minutes 6 seconds	11
115	Ishan	73 %	12 minutes 31 seconds	11
116	Jaiha	73 %	13 minutes 6 seconds	11
117	Fgh	67 %	59 seconds	10
118	Akarsh	67 %	1 minutes 22 seconds	10
119	Subhankar	67 %	1 minutes 26 seconds	10
120	Manuela	67 %	2 minutes 30 seconds	10
121	Saurabh	67 %	3 minutes 5 seconds	10
122	Yudtud	67 %	4 minutes 3 seconds	10
123	Punya	67 %	4 minutes 9 seconds	10
124	Dctgt	67 %	4 minutes 24 seconds	10
125	ayesha	67 %	4 minutes 42 seconds	10
126	Shakti	67 %	4 minutes 58 seconds	10
127	=	67 %	4 minutes 59 seconds	10
128	Ullah	67 %	5 minutes 1 seconds	10
129	mi	67 %	5 minutes 15 seconds	10
130	Yyyy	67 %	5 minutes 29 seconds	10
131	Gouri	67 %	6 minutes 24 seconds	10
132	kk	67 %	6 minutes 46 seconds	10
133	Ina	67 %	6 minutes 49 seconds	10
134	Lana	67 %	6 minutes 51 seconds	10
135	Harshul	67 %	6 minutes 59 seconds	10
136	Rishith	67 %	7 minutes 2 seconds	10
137	hi	67 %	8 minutes 35 seconds	10
138	aaa	67 %	9 minutes 1 seconds	10
139	Shivendra Singh Sengar	67 %	9 minutes 25 seconds	10
140	Eren	67 %	10 minutes 54 seconds	10
141	A	67 %	11 minutes 12 seconds	10
142	Isha	67 %	13 minutes 4 seconds	10
143	1234	67 %	15 minutes 20 seconds	10
144	Anushka	67 %	24 minutes 48 seconds	10
145	W	67 %	31 minutes 47 seconds	10
146	Gu	60 %	1 minutes 10 seconds	9
147	Subhankar	60 %	2 minutes 19 seconds	9
148	Sorout	60 %	2 minutes 35 seconds	9
149	Akarsh	60 %	2 minutes 49 seconds	9
150	Yh7j7j	60 %	3 minutes 4 seconds	9
151	as	60 %	3 minutes 38 seconds	9
152	g	60 %	3 minutes 39 seconds	9
153	**	60 %	5 minutes 7 seconds	9
154	Narumugai yaline	60 %	5 minutes 29 seconds	9
155	AK	60 %	5 minutes 35 seconds	9
156	k	60 %	6 minutes 15 seconds	9
157	Sneha	60 %	6 minutes 42 seconds	9
158	Kanak	60 %	7 minutes 2 seconds	9
159	Pranii...♥️	60 %	7 minutes 27 seconds	9
160	Purab	60 %	9 minutes 49 seconds	9
161	Hh	60 %	10 minutes 14 seconds	9
162	Puja	60 %	11 minutes 43 seconds	9
163	Soyam	60 %	13 minutes 19 seconds	9
164	shubham	60 %	17 minutes 59 seconds	9
165	Sindhu	60 %	19 minutes 9 seconds	9
166	Vhhv	60 %	19 minutes 43 seconds	9
167	Naam chle bhai ka	53 %	42 seconds	8
168	Vj	53 %	58 seconds	8
169	Gu	53 %	1 minutes 3 seconds	8
170	gtu]	53 %	1 minutes 8 seconds	8
171	Akarsh	53 %	1 minutes 22 seconds	8
172	Akarsh	53 %	1 minutes 29 seconds	8
173	Vani	53 %	1 minutes 39 seconds	8
174	Anjali Pandey	53 %	1 minutes 40 seconds	8
175	Anjali Pandey	53 %	1 minutes 48 seconds	8
176	Shruti arya	53 %	1 minutes 56 seconds	8
177	bv	53 %	2 minutes 12 seconds	8
178	Ks	53 %	2 minutes 18 seconds	8
179	Jashanpreet Kaur	53 %	2 minutes 33 seconds	8
180	Kiwi	53 %	2 minutes 43 seconds	8
181	Shreya	53 %	2 minutes 56 seconds	8
182	Jeena	53 %	3 minutes 17 seconds	8
183	ch. navya	53 %	3 minutes 38 seconds	8
184	Alexa	53 %	3 minutes 39 seconds	8
185	Arpi	53 %	3 minutes 40 seconds	8
186	darsh	53 %	3 minutes 46 seconds	8
187	Nishant	53 %	4 minutes 1 seconds	8
188	Ameena	53 %	4 minutes 3 seconds	8
189	Ravi	53 %	4 minutes 21 seconds	8
190	akshitha	53 %	4 minutes 23 seconds	8
191	P	53 %	4 minutes 41 seconds	8
192	Sunil singh	53 %	5 minutes 6 seconds	8
193	Manuela	53 %	5 minutes 9 seconds	8
194	Nayra	53 %	5 minutes 26 seconds	8
195	vijayakumar	53 %	5 minutes 41 seconds	8
196	Amy	53 %	6 minutes 6 seconds	8
197	sun	53 %	6 minutes 25 seconds	8
198	Aakriti	53 %	6 minutes 35 seconds	8
199	AD	53 %	7 minutes 46 seconds	8
200	Yy	53 %	7 minutes 58 seconds	8

Key Topics Covered in the Quiz

✔ Mendel’s Laws of Inheritance
✔ Monohybrid and Dihybrid Cross
✔ Dominant and Recessive Traits
✔ Sex Determination in Humans
✔ Genotypic and Phenotypic Ratios
✔ Variation and Evolution

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Also See: Nelson Mandela: Long Walk to Freedom: Class 10 Q&A

About the Quiz

Why Take This Quiz?

Leaderboard – Top Scorers

Key Topics Covered in the Quiz

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