WorksheetsGenes & DNA
Total questions: 15
Worksheet time: 30mins
Name
Class
Date
1.
What did Mendel discover about recessive traits?
a)
They disappear completely
b)
They become dominant
c)
They reappear in 2nd generation
d)
They are useless
2.
A string of nucleotides that make a specific trait is called?
a)
gene
b)
ribosome
c)
RNA
d)
DNA
3.
What is a Punnett Square?
a)
A math problem
b)
A probability tool used in genetics
c)
A box with letters
d)
A form of a gene
4.
What base pairs with Adenine (A)?
a)
Thymine (T)
b)
Guanine (G)
c)
Cytosine (C)
d)
Uracil (U)
5.
What are the parts of a nucleotide?
a)
DNA, RNA, mRNA
b)
allele, genes
c)
amino acid, protein, ribosome
d)
sugar, phosphate, base
6.
What is the job of mRNA?
a)
Build the protein
b)
Give the instructions
c)
Hold everything together
d)
Bring the amino acids
7.
What is a genotype?
a)
The physical appearance of an organism
b)
The genetic code of the trait
c)
Two different alleles for a specific trait
d)
Two of the same alleles for a specific trait
8.
Which of the following is an example of an homozygous gene?
a)
Tt
b)
Pp
c)
BB
d)
Rr
9.
What are the 3 types of mutations?
a)
homozygous, heterozygous, genotype
b)
deletion, addition, substitution
c)
mutagen, insertion, deletion
d)
insertion, deletion, substitution
10.
How is genetic knowledge used?
a)
Solve crimes, find family members
b)
Fingerprinting, genetic engineering
c)
DNA databases. solve crimes
d)
Ancestry.com, fingerprinting
11.
What base pairs with Cytosine (C)?
a)
Thymine (T)
b)
Guanine (G)
c)
Adenine (A)
d)
Uracil (U)
12.
What does the structure of DNA look like?
a)
A string/strand
b)
Double helix
c)
Single Helix
d)
A bundle
13.
A Red snapdragon crosses with a White snapdragon. What color flower is the offspring?
a)
Red
b)
White
c)
Pink
d)
Spotted
14.
What is the job of tRNA?
a)
Build the protein
b)
Give the instructions
c)
Hold everything together
d)
Bring the amino acids
15.
Who built the first model of DNA?
a)
Rosalind Franklin
b)
Gregor Mendel
c)
Erwin Chargaff
d)
Watson & Crick
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