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WorksheetsMutations, Human Genetics, and Pedigree Charts! Oh My!
Total questions: 41
Worksheet time: 2hrs 3mins
Colorblindness is more common in males because it is controlled by
Mendelian inheritance.
Incomplete dominance.
codominance.
Sex-linked inheritance.
This pedigree shows a trait that is most likely
autosomal dominant.
sex-linked.
autosomal recessive.
The mom in generation 1
has the disorder.
is homozygous for the trait.
is a carrier.
Which combination of sex chromosomes results in a male?
XX
YY
XY
A chart that tracks a disorder in a family is called a
pedigree.
Punnett Square.
Generation 2 individual 3 is
male.
female.
What genetic disease is the only one we studied that is caused by a dominant allele?
PKU
Cystic Fibrosis
Huntington's Disease
Tay Sachs Disease
Chromosome that is not a sex chromosome
Chromosome
Autosome
Sex Chromosome
Homologous pair
If a gene is found only on the X chromosome and not the Y chromosome, it is said to be what?
sex-linked trait
polygenic trait
codominant trait
incomplete dominance trait
In humans, the 23rd pair of chromosomes are called:
Autosomes
Sex chromosomes
Chromatids
Gender chromosomes
What chromosomal disorder is displayed by this karyotype?
Turner (XO) Syndrome
Down Syndrome
Trisomy 18
Klinefelter's (XXY) Syndrome
What chromosomal disorder is displayed by this karyotype?
Turner (XO) Syndrome
Down Syndrome
Trisomy 18
Klinefelter's (XXY) Syndrome
An image that displays homologous chromosomes within a nucleus is called a:
Pedigree
Karyotype
Family Tree
Cladogram
In this human karyotype, is the individual male or female?
Male
Female
What 2 factors can a karyotype tell you?
Gender
Gene mutations
Phenotype (physical appearance)
Presence of chromosomal disorders
If primarily males are affected, such as in the above pedigree, the trait is:
Autosomal
Sex-linked
Dominant
Recessive
ATTGAGCC - Mutated
The example above is an example of a
A _____ mutation will most likely cause the biggest impact at the ______ of a gene sequence.
substitution, end
insertion, end
substitution, beginning
insertion, beginning
A mutation that involves one or a few nucleotides is called
a mutagen
an inversion
a point mutation
a translocation
Which of the following is a chromosomal mutation?
inversion
insertion
point mutation
substitution
When a chromosome undergoes a deletion mutation, information is
repeated
lost
copied
transferred
Most mutations
have no effect on an organism
are fatal to an organism
are helpful to an organism
are harmful to an organism
What are some characteristics of polyploidy plants?
They tend to be weaker and smaller than diploid plants.
They tend to be bigger and stronger than diploid plants.
They tend to be weaker, but bigger than diploid plants.
They tend to be smaller, but stronger than diploid plants.
Sex-linked genes are located on
the autosomal chromosomes.
the Z chromosome only.
the Y chromosome only.
both the X chromosome and the Y chromosome.
Colorblindness is more common in males than in females because the allele for colorblindness is
dominant and located on the X chromosome.
recessive and located on the Y chromosome.
recessive and located on the X chromosome.
recessive and located on the Y chromosome.
Human males have
one X chromosome only.
two X chromosomes.
one X and one Y chromosome.
two Y chromosomes.
Which of the following form(s) a Barr body?
one of the Y chromosomes in a male cell
one of the X chromosomes in a male cell
one of the X chromosomes in a female cell
both of the X chromosomes in a female cell
Which of the following is caused by a dominant allele?
Huntington’s disease
colorblindness
cystic fibrosis
sickle-cell disease
Which of the following diseases and conditions does not appear until late in a person’s life and causes mental breakdowns and loss of bodily control?
cystic fibrosis
sickle cell disease
colorblindness
Huntington disease
Sickle cell disease is caused by a
change in one allele.
change in the size of a chromosome.
change in two protons.
change in the number of chromosomes in a cell.
The failure of chromosomes to separate during meiosis is called
nondisjunction.
X-chromosome inactivation.
Turner’s syndrome.
Down syndrome.
Which of the following combinations of sex chromosomes represents a female?
XY
XXY
XXXY
XX
Which of the following can be used to cut DNA so it can be studied?
restriction enzymes
gel electrophoresis
karyotypes
haplotypes
The Human Genome Project was an attempt to
sequence every person’s DNA.
sequence the DNA of every human gene.
cure infectious human diseases.
identify all restriction enzymes.
Why are all X-linked alleles expressed in males, even if they are recessive?
Males on have one X chromosome, and another X chromosome.
Males only have one X chromosome and no chance for a dominant allele to block it.
Males have an extra X chromosome that makes them easier to get genetic disorders.
Women are cruel and love to see men suffer. Hahaha
How might karyotypes be useful to medical doctors?
They can count the number of genes it takes to create an elephant.
They can check the results to see if there are any possible abnormalities or disorders found in the chromosomes.
They can look for start and stop codons.
The can see point mutations.
Why do some kinds of point mutations generally result in greater changes (and possibly more damage) in proteins than others?
Most point mutations do nothing
Most point mutations cause harm no matter what the change might be in the protein.
Many change proteins to become beneficial in the adult organism.
Frameshift mutations, like insertions and deletions, can change the “reading frame” and mess up everything that comes after them. Others may do nothing or something minor.
