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WorksheetsNC Protein Synthesis, Mutation and Mendelian Genetics Review
Total questions: 71
Worksheet time: 2hrs 50mins
The physical expression of a trait is called the ...
genotype
phenotype
Segments of DNA that code for traits are called ....
genes
proteins
alleles
Genotype: TT
homozygous dominant
homozygous recessive
heterozygous dominant
Genotype: Aa
homozygous dominant
homozygous recessive
heterozygous dominant
Cross 2 heterozygous tall pea plants. Tall (T) is dominant to short (t). What fraction of the offspring do you predict will be tall?
1/4
2/4
3/4
4/4
Which statement below describes DOMINANT alleles?
expressed when at least one is present
only expressed when 2 are present
Which of the following is a PHENOTYPE for flower color in pea plants?
Pp
PP
Purple
The trait or allele that is expressed when only one is present is called the ___________ trait.
dominant
recessive
In pea plants, tall (T) is dominant over short (t). If two heterozygous tall pea plants are mated, what is the the expected genotypic ratio of their offspring?
3 tall : 1 short
1 TT : 2 Tt : 1 tt
In the problem shown, what must the genotype of the missing parent be?
BB
Bb
bb
The different forms or versions of a gene are called ...
alleles
gametes
In humans, freckles (F) on the skin are dominant to no freckles (f). If a heterozygous parent and a recessive parent conceive, what is the chances of having a child with NO FRECKLES?
0%
50%
100%
Having freckles is a dominant trait in humans. A girl has freckles, but her brother does not. What do we know for certain about the parents?
both parents have at least one recessive allele
both parents are heterozygous for freckles
one of the parents does not have freckles
In a population of bees, long wings (L) are dominant over short wings (l). Bees with long wings are ...
heterozygous only (Ll)
homozygous
dominant only (LL)
heterozygous or
homozygous
dominant (LL or Ll)
Genotype: rr
homozygous dominant
homozygous recessive
heterozygous dominant
Which statement below describes RECESSIVE alleles?
expressed when at least one is present
only expressed when 2 are present
What would be the gametes for the YyRr plant?
YR, YR, yR, yR
YR, Yr, yR, yr
Yy, Rr, YY, RR
yy, rr, yy, rr
What is the genotype that should be in the blank square?
yyRr
YYRR
yyrr
YrYr
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
(What do you do first to determine to possible offspring's?)
Foil the genotypes of the parents to get the gametes.
Use the genotypes to fill out the Dihybrid cross
The gametes are just the parent genotypes doubled
The dominant traits will mean that all the gametes will be dominant.
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
What are the gametes of both of the parents?
Ea, ea, ea, EA
EA, Ea, eA, ea
ea, ea, eA, eA
eA, eA, EA, EA
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
What is the missing gamete for parent 1?
eA
ea
EA
Ea
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
What is the missing gamete for parent 2?
eA
ea
EA
Ea
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
What should the genotype be for the box with the "?" ?
EEAa
EeAa
eeAa
eeaa
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
What should the genotype be for the box with the "?" ?
EEAa
EeAa
eeAa
eeaa
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
What should the phenotype be for the box with the "?" ?
Yellow & Smooth
Green & Wrinkled
Green & Smooth
Yellow & Wrinkled
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
What should the phenotype be for the box with the "?" ?
Yellow & Smooth
Green & Wrinkled
Green & Smooth
Yellow & Wrinkled
Parent 1 is heterozygous for both pea color and shape. Parent 2 is heterozygous for both pea color and shape.
Which color/genotype is NOT correct?
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
If chromosomes fail to separate properly during either anaphase I or II, a chromosomal error occurs known as
disjunction
crossing over
non-disjunction
synapsis
A mutation involving an extra copy of a chromosome
monosomy
disomy
trisomy
triploid
Cell differentiation occurs because
Different genes are "turned on" in different cells
DNA in all cells is different
A chromosomal disorder also known as trisomy 21
Turner Syndrome
Down Syndrome
Klinefelter Syndrome
Edward Syndrome
Cross 2 heterozygous tall pea plants. Tall (T) is dominant to short (t). What fraction of the offspring do you predict will be tall?
1/4
2/4
3/4
4/4
In pea plants, tall (T) is dominant over short (t). If two heterozygous tall pea plants are mated, what is the the expected genotypic ratio of their offspring?
3 tall : 1 short
1 TT : 2 Tt : 1 tt
codon
mRNA
anticodon
tRNA
transcription
1st step in protein synthesis
translation
2nd step in protein synthesis
DNA is copied to mRNA
mRNA leaves the nucleus
mRNA finds a ribosome
the anticodon on tRNA matches up with the codon
Amino acids are joined to create a protein
Which of the following molecules contains an anticodon?
tRNA
DNA
mRNA
rRNA
How are DNA and RNA different? (CHECK ALL THAT APPLY)
Only DNA can leave the nucleus
RNA contains Thymine; DNA contains Uracil
DNA is double stranded, RNA is a single stranded
DNA contains Thymine, RNA contains Uracil
Trisomy 21 is a result of a ___ in ___
non disjunction; meiosis
non disjunction; mitosis
non disjunction; DNA replication
substitution in DNA replication
Choose the sequence of the mRNA strand that would match up with to the following DNA strand:
GTACAT
CATGTA
GAUCUA
CAUGUA
CUTGTU
When these bond together, they form a protein
Amino Acids
Peptide Bonds
Ribose
Nucleotides
If the template strand has the sequence 3' GCTATA 5', what is the sequence of the mRNA transcript?
3' GCUAUA 5'
5' CGATAT 3'
5' CGAUAU 3'
3' GCUTUT 5'
This diagram represents
transcription
translation
replication
non disjunction
UUA codes for which amino acid?
If the sequence of the coding strand is 5’ GCCGTACCGTTACG 3’ , then the sequence of mRNA will be:
5’ GCAUUGCCAUGCCG 3’
3’ CGGUACCGUUAGCC 5’
5’ GCCGUACCGUUACG 3’
3’ CGGCAUGGCAAUGC 5’
Which mRNA sequence/s code for glutamine?
Choose all that apply
CGU
CAG
CUA
CAA
The question below refers to the image
The correct sequence of lettered parts in the missing half of this molecule is:
TAGACT
AGTCTA
TCAGAT
GACTGC
Cell differentiation occurs because
Different genes are "turned on" in different cells
DNA in all cells is different
Why are the functions of different cell types different?
Different genes are expressed or "turned on"
The DNA in each cell type is different
Different cells contain only the DNA they need
This diagram represents
transcription
translation
replication
non disjunction
Trisomy 21 is a result of a ___ in ___
non disjunction; meiosis
non disjunction; mitosis
non disjunction; DNA replication
substitution in DNA replication
What goes in box 3
Aabb
AABB
AAbb
aaBb
A white mouse with red eyes is crossed with a black mouse with brown eyes. The white mouse is recessive for both of its traits. The black mouse is dominant for both of its traits.
This cross would be
BBEE x bbee
BBEe x BbEe
BbEE x BbEe
BBee x BBEE
parent 2: ggBb
Find the gametes for parent 1.
What goes in box 15
aabb
AABB
aaBB
AAbb
