Font size
WorksheetsBiology Final Exam SMS2
Total questions: 100
Worksheet time: 2hrs 56mins
A change in a DNA sequence(order) that affects genetic information.
Recessive trait
Mutation
Allele
What shape is DNA?
a circle
a triangle
a double helix
How many chromosomes are shown in a normal human karyotype?
2
23
44
46
In humans, a male has
one X chromosome only
two X chromosomes
one X chromosome and one Y chromosome
two Y chromosomes
Human females produce egg cells that have
one X chromosome
two X chromosomes
one X or one Y chromosome
one X and one Y chromosome
Sex-linked genes are located on
the autosomes
the X chromosome only
the Y chromosomes only
both the X chromosome and Y chromosome
Which chromosome contains more genes for sex-linked traits?
X
Y
Neither, they both have the same amount
The passing of traits from parent to child is known as _______________.
heredity
gene
DNA
RNA
This trait is represented by a lower case letter and hidden whenever the dominant allele is present
dominant allele
codominance
recessive allele
Punnett Square
This trait is represented by a capital letter and always shows up in an organism when the allele is present
dominant allele
codominance
probability
recessive allele
Which of the following is homozygous recessive?
RR
Rr
rR
rr
Which genotypes are heterozygous?
EE
tt
Rr
Both EE and tt
Which genotypes are homozygous dominant?
EE
tt
Rr
Both EE and tt
Which genotypes are homozygous?
EE
tt
Rr
Both EE and tt
_____ is the genetic makeup of an organism.
phenotype
genotype
A ____ is a region of DNA that controls a trait.
gene
phenotype
chromatin
genotype
The ____ is the physical appearance of an organism.
genotype
phenotype
The study of heredity is called
Science
DNA
Dominant
Genetics
What is an inherited characteristic that helps organisms survive?
Evolution
Adaptation
Natural Selection
Extinction
The most specific classification, a group that mates to produce offspring
Genus
Fossils
Species
Speciation
Imprints or remains of once living organisms are called ....
Evolution
Vestigial Structures
Homologous Structures
Fossils
Evolution is...
changes over time in populations
natural process that passes favorable traits
historical timeline of fossils
the process in which an animal dies out
Layered fossils create a historical sequence (timeline) is known as ____________.
Natural Selection
Evolution
Fossil Record
Extinction
A body, organ, or bone that is still present but no longer useful to the organism is ______________________.
Homologous Structure
Vestigial Structure
A similar bone or organ within many different species of life is a ____________________.
homologous structure
vestigial structure
Natural selection is the process that passes down ____________________ traits.
Same
Old
Useless
Favorable
A mistake or change that occurs in the DNA sequence is called a ______________________.
Extinction
Speciation
Mutation
Genetic Variation
When there is a difference in population based on genes, it is said to be a _______________.
Mutation
Speciation
Extinction
Genetic Variation
A new river forms and splits two populations, causing ______________ speciation
Sympatric
Allopatric
Extreme
Convergent
Orcas occur in the same habitat but some are avoiding each other and do not interbreed. They have different diets, vocal behavior, and social structures. What type of speciation is this?
Allopatric
Sympatric
Complex
Covergent
The emergence of new rivers or streams is a type of ____________ isolation.
Temporal
Mechanical
Behavioral
Geographic
DNA
common bone structures
developmental similarities
DNA
common bone structures
saliva
common bone structures
plants
developmental similarities
DNA
common bone structures
developmental similarities
Imprints or remains of once living organisms are called ....
Evolution
Vestigial Structures
Homologous Structures
Fossils
Natural selection is the process that passes down ____________________ traits.
Same
Old
Useless
Favorable
A mistake or change that occurs in the DNA sequence is called a ______________________.
Extinction
Speciation
Mutation
Genetic Variation
An organism's place in the biotic environment and its role in an ecosystem is
Niche
Epitope
Habitat
Habit
