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WorksheetsGenetics Vocabulary
Total questions: 48
Worksheet time: 26mins
A comparison between two quantities (amounts) often written with a colon (e.g. 1:4, 2:2, 3:1) is called a __________ .
probability
percentage
ratio
equation
The alternate forms or varieties of a gene for a specific trait are called ________________ .
genotypes
alleles
genes
phenotypes
The observable characteristics or traits of an organism are an organism's _________________ .
genotype
phenotype
dominant
homozygous
A chart used to show all the ways genes from two parents can combine and be passed to offspring is a _____________ .
Pie chart
Line graph
Bar graph
Punnett Square
The basic unit of heredity that consists of a segment of DNA on a chromosome is a _______________ .
chromosome
double helix
homozygous
gene
The allele whose trait is not shown when combined with a dominant form is called __________________ .
gene
recessive
homozygous
phenotype
The genetic make-up of an organism; the allele combination that it has for a trait is called __________ .
genotype
phenotype
dominant
recessive
The passing of genes from parents to offspring is called _________________ .
Punnett Square
probability
genetics
heredity
What is the name for the branch of biology that studies heredity?
botany
heredity
genetics
geophysics
The symbols Bb represent a ____________ .
phenotype
genotype
probability
trait
The trait expressed if you inherit the alleles F and f is the ____________ .
genotype
dominant trait
recessive trait
homozygous
If pink flesh (P) is dominant in grapefruits over yellow flesh (p), which of the following are possible genotypes for pink grapefruit?
pp and Pp
PP and pp
PP and Pp
only pp
In order for a recessive trait to be expressed,
both alleles have to be recessive
one allele has to be recessive
one allele has to be recessive while the other is dominant
both alleles have to be expressed with capital letters
Which of the following is TRUE of Gregor Mendel?
First person to observe bacteria.
Used compound microscope to observe cells in cork bark.
Explained evolution through a process of natural selection.
Described how traits are passed from one generation to the next.
Mendel stated that a trait is controlled by a pair of inheritable factors. What name do we now use for these inheritable factors?
traits
DNA
heterozygous
genes
According to the Punnett Square, which allele codes for yellow pea pods?
G
g
Which of the following describe's Sofie's phenotype?
Ww
white fur with tan patches
ww
homozygous
Which of the following shows the correct genotype ratio?
4 yellow pods : 0 green pods
3 green pods : 1 yellow pods
4 Yy : 0 YY : 0 yy
1 YY : 2 Yy : 1 yy
Which of the following are correct phenotypic traits for the pictured pea plant? (multiple answers possible)
Rr and YY
green pods
green seeds (peas)
round seeds (peas)
What is the name of the phenomenon where the "dominant" allele does not fully hide the trait of the "recessive" allele in a heterozygous organism?
codominance
hybridization
variation
incomplete dominance
For the pictured Punnett Square, which of the following is the correct phenotype ratio?
4 yellow pods : 0 green pods
100% heterozygous
4 Yy : 0 YY : 0 yy
4 yellow pods : 4 green pods
According to the pictured Punnett Square, which of the following are TRUE? (multiple answers possible)
Both parent flowers have purple petals
50% of the offspring have white petals
the recessive allele codes for purple petals
heterozygous flowers have purple petals
According to the pictured Punnett Square, which of the following are TRUE? (multiple answers possible)
100% of the offspring have purple flowers
50% of the offspring are homozygous
75% of the offspring are heterozygous
25% of the offspring are homozygous and have purple flowers
Which of the following represent homozygous genotypes? (multiple answers possible)
JJ
Gg
Nn
bb
Which of the following represent heterozygous genotypes? (multiple answers possible)
Gg
Ff
UU
In Andalusian chickens, hybrid chickens show a blended phenotype between dominant black feathers and recessive white feathers. This is _________________ .
codominance
a mutation
Incomplete Dominance
gene therapy
A pea plant has a tall stem. What are its possible genotypes? (multiple answers possible)
TT
tt
Tt
Because of his scientific work and discoveries, Gregor Mendel is known as the __________ .
Father of Microbiology
Father of Botany
Father of Genetics
Father of Legumes
Which of the following were traits that Mendel studied in pea plants? (multiple answers possible)
seed shape
pod color
stem height
flower color
What is the genotype ratio for the pictured Punnett Square?
2 Bb : 2 bb
1 BB : 2 Bb : 1 bb
2 black fur : 2 white fur
2 BB : 2 bb
If R is the dominant allele for red petals and r is the recessive allele for white petals, the Punnett Square shows which of the following?
75% of offspring will have red petals
25% of offspring will have red petals
50% of offspring will have white petals
50% of offspring will have pink petals
Which of the following genotypes are homozygous? (multiple answers possible)
IAIA
BB
Nn
Tt
Which of the following genotypes is heterozygous?
Gg
IAIA
tt
BB
The pictured symbol designates _________ .
maleness
femaleness
homozygous
diploid
The pictured symbol designates _________ .
maleness
femaleness
heterozygous
haploid
A ___________ allele is one whose trait always shows up in the organism when the allele is present.
recessive
dominant
heterozygous
hybrid
In pea plants, the allele for tall stems is dominant over the allele for short stems. Pea plants with one allele for tall stems and one allele for short stems will be ___________ .
tall
short
medium-sized
homozygous
An organism's __________ is its physical appearance, or visible traits.
genotype
pedigree
phenotype
karyotype
Camellia flower show ____________ . Heterozygous flowers show both the red petal allele and the white petal allele expressed equally.
dominance
codominance
recessiveness
albinism
What genetics term comes from the Greek words for "joined to" and "other" ?
homozygous
heterozygous
phenotype
recessive
The different forms of a gene are called ___________ .
alleles
chromosomes
base pairs
phenotypes
The passing of physical characteristics from parents to offspring is called _____________ .
fertilization
phylogeny
heredity
adaptation
Over the course of eight years, about how many pea plants did Gregor Mendel grow for his experiments?
250
2,600
28,000
44,000
An inherited factor that controls a trait is a(n) ___________ .
gene
protein
enzyme
chromosome
The gene that controls stem height in peas has one ________ for tall stems and one ________ for short stems.
hybrid
genotype
allele
telomere
A ________ allele is one whose trait always shows up in the organism when the allele is present.
homozygous
dominant
hybrid
recessive
Which British geneticist created the chart that shows all of the possible allele combinations that can result from a genetic cross?
Reginald Punnett
Walter Sutton
Francis Crick
William Bateson
An organism's ____________ is its genetic makeup, or allele combinations.
karyotype
genotype
phylogeny
phenotype
