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WorksheetsGenetics
Total questions: 47
Worksheet time: 2hrs 9mins
Name
Class
Date
1.
DNA adn RNA are similar because both contain
a)
thymine
b)
nucleotides
c)
double helices
d)
deoxyribose
2.
Having two of the same genes for the trait (TT, tt); Both dominant or both recessive.
a)
homozygous or purebred
b)
heterozygous or hybrid
c)
twin offspring
d)
pairs of chromosomes
3.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
4.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
5.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous genes
d)
mutated DNA
6.
Aa is
a)
homozygous (purebred)
b)
heterozygous (hybrid)
7.
B=brown eyes
b= blue eyes
What is true about these two brothers that have brown eyes:
One has genotype BB the other Bb.
b= blue eyes
What is true about these two brothers that have brown eyes:
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
8.
Evan is a tall, 12 year old boy. He has a scar on his right cheek. He is intelligent and an excellent drummer. Which of his traits did he most likely inherit?
a)
height
b)
the scar
c)
his intelligence
d)
ability to play drums
9.
Where is DNA in a eukaryotic cell?
a)
Cytoplasm
b)
Cell membrane
c)
Nucleus
d)
Vacuole
10.
Which of the following best describes a DNA molecule?
a)
double helix
b)
not present in plants
c)
found in non-living things
d)
DNA is an element on the periodic table
11.
What is the cause of some traits "skipping" a generation?
a)
dominant traits
b)
recessive traits
c)
mutations
d)
natural selection
12.
Who is considered the "father of genetics"?
a)
Gregor Mendel
b)
Reginald Punnett
c)
James Watson
d)
Justin Bieber
13.
natural differences in an inherited trait
a)
Asexual
b)
Uniform
c)
Variation
d)
Overproduction
14.
What is a phenotype?
a)
The expression of a trait; physical appearance.
b)
refers to the genetic makeup of an individual
c)
An organism that has the same genes for a trait (ex. TT or tt)
d)
the passing of traits from parent to offspring
15.
Two heterozygous (Tt)tall pea plants are crossed. Which describes their offspring?
a)
50% tall and 50% short
b)
75%tall and 25% short
c)
100%short
16.
Colorblindness is a recessive, X chromosome sex-link disorder. Cross the parents to figure out which percentage of their offspring will be colorblind.
a)
25%
b)
0%
c)
75%
d)
50%
17.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
18.
What type of chromosomal abnormality do people with Down Syndrome have?
a)
trisomy 21
b)
monosomy 21
c)
recessive inheritance
d)
dominant inheritance
19.
In fruit flies eye color is carried on the X chromosome. RED is dominant to WHITE. What is the sex and color of the following: XrY
a)
female red
b)
female white
c)
male red
d)
male white
20.
Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.
a)
DNA
b)
protein
c)
RNA
d)
glucose nucleic acid (GNA)
21.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
22.
What type of heredity is shown in the pedigree?
(hint: check your notes - "modes of inheritance")
(hint: check your notes - "modes of inheritance")
a)
Sex-Linked Dominant
b)
Sex-Linked Recessive
c)
Autosomal Dominant
d)
Autosomal Recessive
23.
Does the order of amino acids in a protein matter?
a)
YES!
b)
NO!
24.
In order for DNA instructions to move from the nucleus to the ribosomes in the cytoplasm of a cell, an RNA copy of a DNA strand must be made. This process, which takes place in the cell nucleus, is called
a)
translation
b)
mutation
c)
DNA replication
d)
transcription
25.
Translation is the process where
a)
mRNA is created in the Nucleus
b)
mRNA is decoded to form a protein
c)
glucose molecules are made
d)
is where lipids are synthesised
26.
The anti-codon
a)
contains a sequence the same as the codon
b)
contains a sequence complementary to the codon
c)
contains the base thymine
27.
tRNA is involved in
a)
carrying amino acids
b)
carrying ribosomes
c)
carrying glucose
d)
carrying lipids
28.
Amino acids are joined together in order to form
a)
DNA
b)
ribosomes
c)
proteins
d)
RNA
29.
Translation is crucial to the process of making proteins. Which statement best describes what takes place during translation?
a)
A copy of chromosomal DNA is created
b)
Information in mRNA is converted into a sequence of amino acids in a protein
c)
A RNA copy of a DNA strand is made.
d)
Instructions from DNA in the nucleus are brought to the cytoplasm
30.
Smaller segments of RNA nucleotides that transport amino acids to the ribosomes.
a)
mRNA
b)
tRNA
c)
rRNA
d)
DNA
31.
which process is shown?
a)
diffusion
b)
repiration
c)
recombination
d)
translation
32.
The DNA sequence ATCAGCGCTGGC is part of a gene. how many amino acids are coded for by this message?
a)
4
b)
8
c)
12
d)
20
33.
What is the name of 3 bases on mRNA called?
a)
gene
b)
triplet
c)
codon
d)
anticodon
34.
What is occurring in this picture?
a)
Translation
b)
DNA Replication
c)
Polymerase is unzipping the DNA
d)
Transcription
35.
In a ____ mutation, one base pair is changed our on DNA.
a)
Point
b)
Frameshift
c)
Cross over
d)
Translocation
36.
When bases are added or deleted, the mRNA will be read out of sync, to the right or left of normal. this is___.
a)
Deletion
b)
Insertion
c)
Frameshift
d)
Crossover
37.
A nitrogenous base is an important component of the nucleotide making up DNA. Which of the following correctly lists the four possible nitrogenous bases in DNA?
a)
glutamine, proline, tyrosine, phenylalanine
b)
adenine,guanine,cytosine,thymine
c)
leucine,proline,tyrosine,phenylalanine
d)
adenine,guanine,cytosine,uracil
38.
Twin colts were born from a black mare and a black stallion. One colt was black, and one was brown. The colts have different traits because their DNA contains
a)
different amounts of sugars in their molecules
b)
different arrangements of nucleotids
c)
different amounts of the base thymine
d)
different numbers of proteins in their molecules
39.
Recombinant DNA technology involves the joining together of DNA molecules from two different species that are inserted into a host organism to produce new genetic combinations that are of value to science, medicine, agriculture, and industry. Which of the following facts makes this type of technology possible?
a)
DNA molecules from all organisms share the same chemical structure. They differ only in the nucleotide sequence within that identical overall structure.
b)
DNA has a very specific helical shape that can be unwound and unzipped using an enzyme called helicase.
c)
DNA in some organisms is circular and contains only a few genes.
d)
In all organisms, DNA is translated into RNA. This RNA is then translated into a protein by components called ribosomes. The only difference in this process among organisms is where transcription takes place.
40.
Electrophoresis draws individual strands of DNA across a gel gradient. This process displays the length of each piece of DNA in a unique code of lines. This type of technology allows scientists to —
a)
accurately identify and distinguish certain strands of DNA from others
b)
recombine pieces of DNA from two or more organisms
c)
study an organism’s chromosomes and check for abnormalities in chromosome numbers
d)
genetically modify an organism’s DNA
41.
Which RNA bases would pair with TACGAA in transcription?
a)
AUGCUU
b)
ATGCTT
c)
GCATCC
d)
GCAUCC
42.
The production of eggs and sperm is the process called?
a)
gametogenesis
b)
mitotic cell division
c)
fertilization
d)
sex linkage
43.
inversion is a type of?
a)
mutation
b)
deletion
c)
insertion
d)
trisomy
44.
Which of the following represents cloning
a)
the cell taken from the leaf produced eight cells, each having one-half of the genetic information of the original leaf cell
b)
procedure is used to produce new tomato plants that are clones of the original tomato plant
c)
new tomato plant will not be able to reproduce sexually becaust it was produced y mitotic cell division
45.
what is true of mitotic cell division
a)
the size of the parent determines the amount of genetic material
b)
all genetic material comes from one parent
c)
the size of the parent determines the source of the genetic material
46.
During meiosis, homologous chromosomes can exchange DNA in a process known as
a)
crossing over
b)
replication
c)
cytokinesis
d)
internal fertilization
47.
Which cell is normally produced as a direct result of meiosis
a)
an egg having fullthe full species number of chromosomes
b)
a zygote having the full species number of chromosomes
c)
a sperm having half the number
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