Grade 10 : Science - 8. Heredity (Set 3)

Question 1

In a cross between homozygous tall (TT) and homozygous dwarf (tt) plants, what is the phenotypic ratio of the F2 generation?

Accepted Answer

A) 3:1

Answer

B) 1:2:1

Answer

C) 1:1

Answer

D) 2:1

Question 2

Which of the following describes the genotype of a pea plant that is heterozygous for seed shape?

Accepted Answer

B) Rr

Answer

A) RR

Answer

C) rr

Answer

D) RRrr

Question 3

How many pairs of chromosomes are found in human somatic cells?

Accepted Answer

C) 23

Answer

A) 22

Answer

B) 24

Answer

D) 46

Question 4

If a cross is made between two heterozygous tall plants (Tt), what percentage of offspring will be homozygous dwarf?

Accepted Answer

A) 25%

Answer

B) 50%

Answer

C) 75%

Answer

D) 100%

Question 5

What is the scientific term for the physical appearance of an organism?

Accepted Answer

B) Phenotype

Answer

A) Genotype

Answer

C) Allele

Answer

D) Gene

Question 6

Who is known as the 'Father of Genetics'?

Accepted Answer

A) Gregor Mendel

Answer

B) Charles Darwin

Answer

C) Jean-Baptiste Lamarck

Answer

D) Hugo de Vries

Question 7

Which of the following is a dominant trait in pea plants according to Mendel?

Accepted Answer

B) Round seeds

Answer

A) Wrinkled seeds

Answer

C) Green seeds

Answer

D) Terminal flowers

Question 8

What is the genetic constitution of an organism called?

Accepted Answer

C) Genotype

Answer

A) Phenotype

Answer

B) Trait

Answer

D) Mutation

Question 9

What is the probability of having a male child?

Accepted Answer

A) 50%

Answer

B) 25%

Answer

C) 75%

Answer

D) 100%

Question 10

Which chromosome determines the sex of the child in humans?

Accepted Answer

B) Y chromosome

Answer

A) X chromosome

Answer

C) Autosome

Answer

D) Mitochondrial DNA

Question 11

A cross between a homozygous recessive and a heterozygote is known as:

Accepted Answer

C) Test cross

Answer

A) Monohybrid cross

Answer

B) Back cross

Answer

D) Dihybrid cross

Question 12

Where is the genetic material (DNA) located in a cell?

Accepted Answer

A) Nucleus

Answer

B) Cytoplasm

Answer

C) Ribosome

Answer

D) Cell wall

Question 13

What is the result of a dihybrid cross phenotypic ratio in the F2 generation?

Accepted Answer

B) 9:3:3:1

Answer

A) 3:1

Answer

C) 1:2:1

Answer

D) 1:1:1:1

Question 14

Which of these is a recessive trait?

Accepted Answer

C) White flowers

Answer

A) Tall height

Answer

B) Round seeds

Answer

D) Axial flowers

Question 15

If a parent has genotype Aa, what types of gametes are produced?

Accepted Answer

A) A and a

Answer

B) AA and aa

Answer

C) Only A

Answer

D) Only a

Question 16

The law of independent assortment applies to:

Accepted Answer

B) Dihybrid cross

Answer

A) Monohybrid cross

Answer

C) Test cross

Answer

D) Incomplete dominance

Question 17

Which term refers to alternate forms of a gene?

Accepted Answer

C) Alleles

Answer

A) Chromosomes

Answer

B) DNA

Answer

D) Proteins

Question 18

What is a segment of DNA that codes for a protein called?

Accepted Answer

A) Gene

Answer

B) Chromosome

Answer

C) Nucleotide

Answer

D) Allele

Question 19

How many chromosomes does a human sperm cell carry?

Accepted Answer

B) 23

Answer

A) 46

Answer

C) 22

Answer

D) 24

Question 20

What was the subject of Mendel's experiments?

Accepted Answer

A) Pisum sativum

Answer

B) Drosophila melanogaster

Answer

C) Escherichia coli

Answer

D) Mus musculus

Set 3Grade 10 : Science - Heredity

Grade 10 : Science - Heredity

Examination Instructions:

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Set 3Grade 10 : Science - Heredity

Grade 10 : Science - Heredity

Examination Instructions:

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Set 3Grade 10 : Science - Heredity

Grade 10 : Science - Heredity

Examination Instructions:

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Set 3Grade 10 : Science - Heredity

Grade 10 : Science - Heredity

Examination Instructions:

Share This Quiz

Discussion 0

Rating & Discussion Locked

More Quizzes for Grade 10

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