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Worksheets4Q Bio I FE Review
Total questions: 82
Worksheet time: 2hrs 12mins
In chickens, feather color is codominant. If a black chicken (BB) is mated with one that is black and white (BW), what are the chances of having chicken(s) that are black and white?
100%
25%
75%
50%
In a pedigree, the shape □ represents...
Healthy male
Healthy female
Carrier male
Affected male
In watermelons, green rinds (G) are dominant to yellow rinds (g). What is the genotype of a heterozygous green watermelon?
GG
Gg
gg
GY
Chromosome mapping can done directly by searching for a specific ____.
gene
gender
disorder
dominance
Non allelic means...
genes on multiple chromosomes that code on a specific trait
inheritance patterns always follow Mendelian rule
genes that expressed one allele - either recessive or dominant
genes that are not expressed and always turn out to die
Which of the following statements is true of X-chromosome inactivation?
occurs in cells of female mammals
affects fewer genes than Y chromosome expression
determines phenotype in male mammals
disable some chromosomes in male mammals' cells
Do identical twins have all the same genes?
Yes, but some may not be expressed
No, only the 22 autosomal chromosomes are the same
Yes, they are all completely expressed
No, it is traits that are all the same
Jerome is concerned about Huntington's disease since his father passed away from it. After a gene test, he figured out he does not have it. He marries Racquel and are prepared to have a child. The disease is a AUTOSOMAL DOMINANT DISORDER.
What is the genotype of Racquel if she is healthy and does not have the disease?
hh
HH
Hh
XH
Jerome is concerned about Huntington's disease since his father passed away from it. After a gene test, he figured out he does not have it. He marries Racquel and are prepared to have a child. The disease is a AUTOSOMAL DOMINANT DISORDER.
What is the genotype of his father?
Hh
hh
HH
HY
A ______ is a cross between an orgnaism with an unknown genotype to an organism with the recessive phenotype.
monohybrid cross
Mendelian cross
testcross
dilihybrid cross
Trihybrid Cross:
AaBBCC x AAbbCC
What is the probability of the offspring being AABBCC?
25%
50%
75%
0%
Dihybrid Cross:
AaBb × AABB
What is the probability that the offspring will be AABB?
100%
25%
50%
75%
Pedigree:
Luigi and Maria are married and are both healthy. Their oldest child, Larry, has a recessive disorder called PKU. Their middle child, Harry, and youngest child, Fiona, are healthy.
What is the genotype of Luigi?
HH
Hh
hh
HH or Hh
Lia is heterozygous. If B is for black hair and b is for brown hair, what is Lia's phenotype?
black hair
brown hair
black and brown hair
olive green
The term for a cross that involves one trait is called...
monohybrid cross
dilihybrid cross
testcross
trihybrid cross
What is the genotypic ratio of a monohybrid cross between 2 heterozygous parents?
9:3:3:1
1:1
3:1
1:2:1
Most of the traits are expressed in a person's phenotype are determined by...
Y chromosome
X chromosome inactivation
autosomal genes
sex chromosomes
In the pedigree, this shape ● represents
affected male
male carrier
affected female
female carrier
What does the horizontal line in the pedigree represent?
marriage
sibling relationship
offspring
generations
A carrier is a person who...
doesn't have the disorder but can pass on to offspring
can develop the disorder later but can't pass it on
has a dominant allele inactivated
passes the disorder on Y chromosome
Genes that are located on sex chromosomes are called...
X-linked
recessive
dominant
homozygous
Parent 1 genotype is AaRr and Parent 2 is AARr. Determine the gametes for PARENT 2.
AR, Ar, AR, Ar
AR, Ar, Ra, ar
AR, RA, AR, RA
Ra, Ar, AR, RA
Use the following genotypes to determine the phenotype.
W - wrinkled
w - constricted
B - blue
b - brown
WWbb
wrinkled blue
wrinkled brown
constricted blue
constricted brown
A mouse is represented as the genotype BBcc. This genotype has a gene that is interfering the brown pigment. If that is the case, what color will it be?
black (the recessive color)
brown (how it used to be)
white (shown albanism)
blonde (another recessive color)
A type blood O female marries a blood type AB. What are the chances that their child will have a blood type O?
100%
25%
0%
50%
If a blood type A marries a heterozygous type B, what is the chance that their offspring will be type A?
0%
25%
50%
65%
A calico cat shows both the traits of orange and black fur. What kind of expression is this?
independent dominance
Mendelian dominance
codominance
incomplete dominance
Polygenic traits result from...
recessive genes
many genes
sex-linked genes
epistatic genes
In this pedigree, how many children did I-1 and I-2 have?
three
four
two
five
In this pedigree, how many people have the disorder?
four
three
two
one
If somebody has a genotype of Bb and the disorder is AUTOSOMAL DOMINANT, what will be the outcome?
the person will be a carrier
the person will be not have the disorder
the person will pass it on to the offspring
the person has the disorder
Which of these is an example of a biological trait?
hair style
regional accent
wealth
eye color
If the pea plant were homozygous recessive, how would its alleles be represented?
TT
Tt
tT
tt
If a male inherits a sex-linked gene for colorblindness...
It is 25% of the time expressed.
It is 50% of the time expressed.
It is 100% of the time expressed.
It will not be expressed.
Who are more likely to suffer from sex-linked diseases and why?
Females - 2 X chromosomes
Females - X chromosome inactication
Males - one X chromosome
Both genders - same species
Which best describes epistasis?
an allele that changes the genotype of another allele
an allele that puppeteers allele expression
an allele that is inactive
an allele that is only expressed in males
A flower that is red is crossed with a flower that is white. What is the flower color in the case of CODOMINANCE?
red and white spotted
pink
white
red
Parents with Type B blood.......
may have children only with blood type B
may have children only with blood type O
may have children with blood type O and B
may have children only with blood type A
If you have Type AB blood, which antigens would be present in your blood?
A
A and B
B
None
What is a karyotype?
An image that shows all of the DNA within an organism
An image that shows the chromosomes from a single cell within a single organism
The entire genetic sequence of humans
A chemical used to stain chromosomes to reveal disorders
The karyotype diagram below represents a human male. Chromosomal analysis of this karyotype reveals the abnormality in this karyotype is:
a missing X chromosome
a missing Y chromosome
an extra 21 chromosome
missing chromosome #9
Which of the following is not a polygenic trait?
hair color
skin color
hemophilia
height
Which of the following is a polygenic trait?
blood type
hair style
height
regional accent
A person who has a disorder caused by a recessive allele is...
unable to pass the allele to the offspring
certain to have the offspring with the disorder
considered a carrier of the disorder
homozygous for the recessive allele
How are incomplete dominance and codominance different than a normal Mendelian cross?
There is no difference.
The heterozygous genotype has a unique phenotype.
There is no heterozygous genotype.
There is only one phenotype regardless of genotype.
Dilihybrid crosses are crosses that examine...
the inheritance of multiple traits
non-Mendelian traits
one trait
two traits
An allele that is expressed only when there are two present is called...
trihybrid allele
monohybrid allelw
recessive allele
dominant allele
An allele (D) is dominant over no dimples. What would be the genotypes of both parents if all of the offspring in the 1st generation don't have dimples?
DD x dd
dd x dd
DD x DD
Dd x dd
How many alleles does a child get from each parent for a trait?
1
2
3
4
cousins
the children
ants and uncles
marriage line
An allele that is expressed who two different or two uppercase letter alleles are present is called...
dominant allele
recessive allele
genetic allele
monohybrid alelle
An allele is dominant in a heterozygote when it is...
more desirable than the other allele
a very common allele in a population
stronger of the two alleles
expressed and the other allele isn't
What do the letters inside of the Punnett square represent?
parents' chromosomes
parents' phenotypes
offsprings' genotypes
offsprings' testcrosses
Identical twins who are raised apart can have differences in a lifetime. This is evidence that...
environment and genotype interact to affect phenotype
non-Mendelian traits can affect phenotype
phenotype differences happen through epistasic genes
genotype can change over time
A male affected with the sex-linked disorder can't trasmit the disorder to his...
sons
daughters
future generations
all of the choices are true
Males and females are affected in ______ proportions in autosomal recessive disorder.
never
equal
to their cousins
only 75% of the time
Which statement is true of a sex-linked recessive gene?
In a XY male, 1 copy is always expressed.
In a XY male, the recessive gene is always expressed.
In an XX female, only one copy is needed for expression.
In an XX female, it's always passed to the offspring.
A flower that is red is crossed with a flower that is white. What is the flower color in the case of INCOMPLETE DOMINANCE?
red and white spotted
pink
white
red
_____ are never affected by sex-linked recessive disorders.
Females
Males
Children
All of the choices above are false.
What is the phenotypic ratio of a monohybrid cross between 2 heterozygous parents?
9:3:3:1
1:1
3:1
1:2:1
What is the probability that the offspring of a cross between a homozygous recessive parent and a heteozygous parent will be homozygous recessive?
1/1
1/2
1/8
1/4
In Andalusian fowls, black individual (BB) and white individuals (bb), they are homozygous. Heterozygous individuals are gray (Bb). What is the genotypic ratio for a cross beteen a grey fowl and a white fowl?
2 BB, 2 Bb, 0 bb
0 BB, 4 Bb, 0 bb
0 BB, 2 Bb, 2 bb
1 BB, 2 Bb, 1 bb
A grid system for predicting all the possibel genotypes is called...
pedigree
Punnett square
Mendelian laws
non-Mendelian laws
The outside of the Punnett square called axes represents the...
gamete genotypes of the parents
gamete genotype of uncles/aunts
phenotypes of parents
just there for decoration
Both males and females can be carriers of autosomal disorders, but in contrast, in sex-linked disorders, only ______ can be carriers of the disorder.
males
females
children
All of the choices are false.
Quarter Review:
How many autosomes are in a human karyotype (from what number to what number)? How many sex chromosomes are in a karyotype (from what number to what number)?
Chromosomes 1-21 is autosomes and Chromosomes 22-23 is sex chromosomes
Chromosomes 1-22 is autosomes and Chromosome 23 is a sex chromosome
Chromosomes 1-23 is autosomes and there is no such thing as a sex chromosome
All chromosomes are only determined by their perspective sex.
Which autosomal genetic disorder is more common?
autosomal dominant
autosomal recessive
both are equally common
There is no auch thing as autosomal disorders.
Quarter Review:
Which sex chromosome is smaller and has fewer genes?
X chromosome
Y chromosome
All chromosomes are equal.
Z chromosome
Which of these shows a heterozygous blood type?
IAIA
IBi
IBIB
ii
A husband is heterozygous for cystic fibrosis (autosomal recessive disorder) and the wife has the disorder. What is the probability of having a healthy child without cystic fibrosis?
0%
25%
50%
75%
