Genetics and Hereditary Traits Quiz

Explore genetics with questions on chromosomes, inheritance, mutations, and more. Test your understanding with our genetics quiz!

#1

Which molecule carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms?

DNA
RNA
Protein
Carbohydrate
2 answered
#2

Which of the following is not a basic law of genetics?

Law of Independent Assortment
Law of Dominance
Law of Conservation of Mass
Law of Segregation
2 answered
#3

Which scientist is known as the father of modern genetics?

Charles Darwin
Gregor Mendel
Thomas Hunt Morgan
James Watson
1 answered
#4

What is the term for the process by which DNA is copied to produce a complementary strand of RNA?

Translation
Transcription
Replication
Mutation
1 answered
#5

Which type of genetic mutation involves the insertion or deletion of nucleotides, shifting the reading frame of the genetic code?

Substitution
Deletion
Insertion
Frameshift
1 answered
#6

In humans, which pair of chromosomes determines the biological sex of an individual?

XX
XY
YY
XXY
1 answered
#7

What term describes the observable characteristics or traits of an organism?

Genotype
Phenotype
Allele
Homozygous
1 answered
#8

In a Punnett square, what represents the possible genotypes of offspring?

Rows
Columns
Cells
Border
1 answered
#9

Which of the following statements about dominant alleles is true?

They always determine the phenotype when present
They are always more common in a population
They can skip generations
They are only found in heterozygous individuals
1 answered
#10

In humans, which blood type is considered the universal donor?

A
B
AB
O
1 answered
#11

Which of the following genetic disorders is caused by the presence of an extra chromosome 21?

Cystic Fibrosis
Huntington's Disease
Down Syndrome
Sickle Cell Anemia
1 answered
#12

What is the term for a gene that masks the effect of another gene at the same locus?

Dominant
Recessive
Codominant
Epistatic
1 answered
#13

What is the term for a type of inheritance where the phenotype of a heterozygote is intermediate between the phenotypes of the two homozygotes?

Incomplete dominance
Codominance
Polygenic inheritance
Epistasis
1 answered
#14

What is the term for the phenomenon where one gene influences multiple, seemingly unrelated phenotypic traits?

Pleiotropy
Polygenic inheritance
Epistasis
Codominance
1 answered
#15

What is the term for a type of mutation that involves the substitution of one nucleotide for another?

Insertion
Deletion
Substitution
Frameshift
1 answered

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