Heredity Class 10 Science MCQ Quiz – Test Your Knowledge

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!)

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Chapter 8 - Heredity

1 / 15

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

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

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

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

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

2 / 15

The genotype of offspring formed from Tt x tt will be

Only tt

Tt and tt

TT and tt

Only TT

3 / 15

Which statement about the genotypes of organisms is correct?

The dominant phenotype must be heterozygous

Recessive phenotypes must be homozygous

One recessive allele always causes a recessive phenotype

Dominant alleles are only found in homozygotes

4 / 15

In cattle, having horns is a recessive trait (h) to not having horns (H). When cattle with horns are crossed with cattle that do not have horns, the number of offspring having horns was equal to those not having horns. Which of the following is MOST LIKELY to be true?

Both parents are homozygous dominant.

One parent is homozygous dominant.

Both parents are heterozygous.

One parent is heterozygous.

5 / 15

The height of a plant is regulated by:

Genes that regulate the proteins directly.

DNA which is directly influenced by growth hormone.

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

Growth hormones directly under the influence of a gene.

6 / 15

Assertion: The probability of survival of an organism produced through sexual reproduction is more than that of an organism produced through asexual mode.

Reason: Variations provide advantages to individuals for survival.

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

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

A is false but R is true.

A is true but R is false.

7 / 15

Which of the following is heterozygous?

ttrr

TTRR

8 / 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

I and III

I and II

I and IV

II and III

9 / 15

Which of the following statements is incorrect?

For the production of every enzyme there is a gene.

For every protein there is a gene.

For every molecule of fat there is a gene.

For every hormone there is a gene.

10 / 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 not the correct explanation of A

A is false but R is true

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

A is true but R is false

11 / 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

12 / 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?

25 %

75 %

100 %

50 %

13 / 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

75 % dominant, 25 % recessive

All dominant

25 % dominant, 50 % heterozygous, 25 % recessive

14 / 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 green

Wrinkled and green

Wrinkled and yellow

Round and yellow

15 / 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

Cross-fertilization

Double fertilization

No fertilization

Self-pollination

Your score is

The average score is 54%

Leaderboard – Top Scorers

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Pos.	Name	Score	Duration	Points
1	Vishal	100 %	44 seconds	15
2	Praniii...	100 %	1 minutes 4 seconds	15
3	Subhankar	100 %	1 minutes 7 seconds	15
4	Ddededede	100 %	1 minutes 56 seconds	15
5	Varun	100 %	1 minutes 58 seconds	15
6	varun	100 %	2 minutes 51 seconds	15
7	varun	100 %	5 minutes 5 seconds	15
8	Alll	93 %	1 minutes	14
9	Eunice	93 %	1 minutes 7 seconds	14
10	Harsh jain	93 %	1 minutes 36 seconds	14
11	Vishal	93 %	1 minutes 41 seconds	14
12	Sarthak	93 %	2 minutes 20 seconds	14
13	Vaishnavi	93 %	3 minutes 11 seconds	14
14	Harsh jain	93 %	4 minutes 15 seconds	14
15	M	93 %	5 minutes 11 seconds	14
16	Akshita	93 %	6 minutes 28 seconds	14
17	Jaiha	93 %	8 minutes 43 seconds	14
18	kl	93 %	17 minutes 26 seconds	14
19	Subhankar	87 %	55 seconds	13
20	Manuela	87 %	1 minutes 18 seconds	13
21	Aria	87 %	1 minutes 54 seconds	13
22	///	87 %	2 minutes 56 seconds	13
23	Mishwa	87 %	3 minutes 3 seconds	13
24	Pranii	87 %	3 minutes 31 seconds	13
25	Varun	87 %	3 minutes 35 seconds	13
26	varun	87 %	4 minutes	13
27	Anushka Selot	87 %	4 minutes 8 seconds	13
28	Rc	87 %	4 minutes 39 seconds	13
29	S	87 %	5 minutes 3 seconds	13
30	T	87 %	8 minutes 59 seconds	13
31	Ruhi	87 %	9 minutes 2 seconds	13
32	Manpreet	87 %	9 minutes 21 seconds	13
33	dhruv	87 %	12 minutes 33 seconds	13
34	Aka	80 %	1 minutes 31 seconds	12
35	ANJALI PANDEY	80 %	1 minutes 34 seconds	12
36	Nishant	80 %	1 minutes 53 seconds	12
37	darsh	80 %	1 minutes 56 seconds	12
38	Ale	80 %	1 minutes 58 seconds	12
39	,	80 %	3 minutes 42 seconds	12
40	Aa	80 %	4 minutes 9 seconds	12
41	mihi	80 %	7 minutes 25 seconds	12
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44	Ayushman	80 %	9 minutes 34 seconds	12
45	rr	80 %	9 minutes 40 seconds	12
46	mendel	80 %	10 minutes 15 seconds	12
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48	Sesd	80 %	15 minutes 42 seconds	12
49	Jkl	80 %	25 minutes 22 seconds	12
50	Shakti	73 %	2 minutes 13 seconds	11
51	Jhsh	73 %	2 minutes 37 seconds	11
52	Priya	73 %	2 minutes 45 seconds	11
53	Harshita	73 %	3 minutes 42 seconds	11
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56	R	73 %	5 minutes 21 seconds	11
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61	Bhumika Singh	73 %	9 minutes 1 seconds	11
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63	Harmeet	73 %	12 minutes 6 seconds	11
64	Jaiha	73 %	13 minutes 6 seconds	11
65	Fgh	67 %	59 seconds	10
66	Akarsh	67 %	1 minutes 22 seconds	10
67	Subhankar	67 %	1 minutes 26 seconds	10
68	Manuela	67 %	2 minutes 30 seconds	10
69	Saurabh	67 %	3 minutes 5 seconds	10
70	Yudtud	67 %	4 minutes 3 seconds	10
71	Punya	67 %	4 minutes 9 seconds	10
72	ayesha	67 %	4 minutes 42 seconds	10
73	Shakti	67 %	4 minutes 58 seconds	10
74	=	67 %	4 minutes 59 seconds	10
75	Ullah	67 %	5 minutes 1 seconds	10
76	Gouri	67 %	6 minutes 24 seconds	10
77	kk	67 %	6 minutes 46 seconds	10
78	Ina	67 %	6 minutes 49 seconds	10
79	Lana	67 %	6 minutes 51 seconds	10
80	Harshul	67 %	6 minutes 59 seconds	10
81	Rishith	67 %	7 minutes 2 seconds	10
82	hi	67 %	8 minutes 35 seconds	10
83	Shivendra Singh Sengar	67 %	9 minutes 25 seconds	10
84	Eren	67 %	10 minutes 54 seconds	10
85	A	67 %	11 minutes 12 seconds	10
86	Isha	67 %	13 minutes 4 seconds	10
87	1234	67 %	15 minutes 20 seconds	10
88	Anushka	67 %	24 minutes 48 seconds	10
89	W	67 %	31 minutes 47 seconds	10
90	Gu	60 %	1 minutes 10 seconds	9
91	Subhankar	60 %	2 minutes 19 seconds	9
92	Akarsh	60 %	2 minutes 49 seconds	9
93	Yh7j7j	60 %	3 minutes 4 seconds	9
94	g	60 %	3 minutes 39 seconds	9
95	**	60 %	5 minutes 7 seconds	9
96	Narumugai yaline	60 %	5 minutes 29 seconds	9
97	AK	60 %	5 minutes 35 seconds	9
98	Sneha	60 %	6 minutes 42 seconds	9
99	Kanak	60 %	7 minutes 2 seconds	9
100	Pranii...♥️	60 %	7 minutes 27 seconds	9
101	Purab	60 %	9 minutes 49 seconds	9
102	Puja	60 %	11 minutes 43 seconds	9
103	Sindhu	60 %	19 minutes 9 seconds	9
104	Vhhv	60 %	19 minutes 43 seconds	9
105	Naam chle bhai ka	53 %	42 seconds	8
106	Vj	53 %	58 seconds	8
107	Gu	53 %	1 minutes 3 seconds	8
108	gtu]	53 %	1 minutes 8 seconds	8
109	Akarsh	53 %	1 minutes 22 seconds	8
110	Akarsh	53 %	1 minutes 29 seconds	8
111	Vani	53 %	1 minutes 39 seconds	8
112	Anjali Pandey	53 %	1 minutes 40 seconds	8
113	Anjali Pandey	53 %	1 minutes 48 seconds	8
114	Shruti arya	53 %	1 minutes 56 seconds	8
115	Ks	53 %	2 minutes 18 seconds	8
116	Jashanpreet Kaur	53 %	2 minutes 33 seconds	8
117	Kiwi	53 %	2 minutes 43 seconds	8
118	Shreya	53 %	2 minutes 56 seconds	8
119	Jeena	53 %	3 minutes 17 seconds	8
120	ch. navya	53 %	3 minutes 38 seconds	8
121	Alexa	53 %	3 minutes 39 seconds	8
122	darsh	53 %	3 minutes 46 seconds	8
123	Nishant	53 %	4 minutes 1 seconds	8
124	Ameena	53 %	4 minutes 3 seconds	8
125	Ravi	53 %	4 minutes 21 seconds	8
126	P	53 %	4 minutes 41 seconds	8
127	Sunil singh	53 %	5 minutes 6 seconds	8
128	Manuela	53 %	5 minutes 9 seconds	8
129	vijayakumar	53 %	5 minutes 41 seconds	8
130	sun	53 %	6 minutes 25 seconds	8
131	Aakriti	53 %	6 minutes 35 seconds	8
132	AD	53 %	7 minutes 46 seconds	8
133	Maya	53 %	9 minutes 8 seconds	8
134	P	53 %	9 minutes 22 seconds	8
135	Ishita	53 %	10 minutes 31 seconds	8
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137	Kunal	53 %	13 minutes 33 seconds	8
138	Gg	53 %	16 minutes 3 seconds	8
139	Sayeda atefa	47 %	1 minutes 30 seconds	7
140	Anand Yadav	47 %	2 minutes 13 seconds	7
141	fiza	47 %	2 minutes 50 seconds	7
142	Tina das	47 %	2 minutes 51 seconds	7
143	Raja	47 %	2 minutes 53 seconds	7
144	Gaurav Singh	47 %	2 minutes 53 seconds	7
145	Subhankar	47 %	4 minutes 2 seconds	7
146	Mohammed Hazin Rahess	47 %	5 minutes 5 seconds	7
147	Piyush	47 %	5 minutes 7 seconds	7
148	Sana	47 %	5 minutes 9 seconds	7
149	Hk	47 %	5 minutes 15 seconds	7
150	paji	47 %	5 minutes 20 seconds	7
151	Shubh	47 %	5 minutes 37 seconds	7
152	Jeevitha	47 %	6 minutes 36 seconds	7
153	Jin	47 %	7 minutes	7
154	Shanaya	47 %	7 minutes 48 seconds	7
155	Fardee	47 %	7 minutes 48 seconds	7
156	Khizra	47 %	8 minutes 1 seconds	7
157	Ashreen	47 %	8 minutes 4 seconds	7
158	Alka gupta	47 %	8 minutes 20 seconds	7
159	Akhil yadav	47 %	8 minutes 49 seconds	7
160	Prani..	47 %	9 minutes 2 seconds	7
161	Radhika sharma	47 %	11 minutes 38 seconds	7
162	Kamala Kanta Barik	47 %	16 minutes 5 seconds	7
163	Uu	40 %	28 seconds	6
164	Priya kumari	40 %	1 minutes 44 seconds	6
165	Yashwanth.R	40 %	3 minutes 8 seconds	6
166	M	40 %	3 minutes 30 seconds	6
167	Alexq	40 %	4 minutes 27 seconds	6
168	Parth wadhwani	40 %	4 minutes 47 seconds	6
169	Priya	40 %	4 minutes 54 seconds	6
170	Iqra Nafees	40 %	5 minutes 1 seconds	6
171	Meenu	40 %	5 minutes 3 seconds	6
172	Gaurav Singh	40 %	5 minutes 35 seconds	6
173	Shruti arya	40 %	5 minutes 47 seconds	6
174	adib	40 %	7 minutes 28 seconds	6
175	Sonam	40 %	7 minutes 36 seconds	6
176	Madhu	40 %	8 minutes 1 seconds	6
177	Ravi	40 %	8 minutes 15 seconds	6
178	Aditya	33 %	1 minutes 16 seconds	5
179	Shivam	33 %	2 minutes 35 seconds	5
180	Anjali Pandey	33 %	2 minutes 39 seconds	5
181	Purvanshi	33 %	2 minutes 45 seconds	5
182	Anmol	33 %	3 minutes 13 seconds	5
183	Shashank	33 %	3 minutes 49 seconds	5
184	Manish Kumar	33 %	4 minutes 10 seconds	5
185	Buddy	33 %	5 minutes 10 seconds	5
186	Harshita	33 %	5 minutes 12 seconds	5
187	Atul Raj	33 %	6 minutes 6 seconds	5
188	Xyz	33 %	6 minutes 10 seconds	5
189	H	33 %	6 minutes 22 seconds	5
190	Ishii	33 %	7 minutes 36 seconds	5
191	Laya	33 %	7 minutes 52 seconds	5
192	Nishant	33 %	8 minutes 14 seconds	5
193	Dhwaj jain	33 %	13 minutes 20 seconds	5
194	Hiv	33 %	17 minutes	5
195	Rock it 🤛🏻	27 %	29 seconds	4
196	Squid game	27 %	39 seconds	4
197	Arti	27 %	1 minutes 11 seconds	4
198	Ankush	27 %	1 minutes 13 seconds	4
199	mahesh kumar	27 %	1 minutes 25 seconds	4
200	Gjv	27 %	2 minutes 11 seconds	4

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: CBSE Class 10 SST Syllabus 2025-26: Download PDF & Full Exam Pattern

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