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Genetic Vocab

Total questions: 35

Worksheet time: 29mins

Name
Class
Date
1.

an organism that has inherited a recessive allele for a genetic trait or mutation but does not display that trait or show symptoms of the disease.

a)

carrier

b)

heredity

c)

phenotype

d)

purebred

2.

a situation in which both alleles for a gene are expressed equally (both are seen at the same time)

a)

carrier

b)

codominance

c)

genotype

d)

incomplete dominance

3.

an organism’s genetic makeup or allele combinations (Tt, TT, tt)

a)

genotype

b)

phenotype

c)

polygenic inheritance

d)

purebred

4.

the passing of traits from parents to offspring

a)

genotype

b)

probability

c)

heredity

d)

selective breeding

5.

having two identical alleles for a particular gene (HH, hh)

a)

heterozygous

b)

homozygous

c)

multiple alleles

d)

trait

6.

an offspring of crosses that has two different alleles for a trait

a)

homozygous

b)

heredity

c)

purebred

d)

hybrid

7.

a situation in which one allele is not completely dominant over another allele (it’s like a blending)

a)

codominance

b)

carrier

c)

incomplete dominance

d)

purebred

8.

three or more possible alleles of a gene that determine a trait

a)

homozygous

b)

phenotype

c)

codominance

d)

multiple alleles

9.

an organism’s physical appearance or visible traits

a)

genotype

b)

phenotype

c)

codominance

d)

trait

10.

the inheritance of traits that are controlled by two or more genes (height in humans)

a)

polygenic inheritance

b)

incomplete dominance

c)

codominance

d)

carrier

11.

an offspring of crosses that has the same form of traits (similar to homozygous)

a)

purebred

b)

selective breeding

c)

genotype

d)

probability

12.

a specific characteristic that an organism can pass to its offspring through its genes

a)

DNA

b)

carrier

c)

heredity

d)

trait

13.

The physical structure in a cell that contains the encoded cell’s genetic material (DNA).

a)

DNA

b)

Gene

c)

Chromosome

d)

Allele

14.

An allele whose trait always shows in the organism when the allele is present.

a)

Phenotype

b)

Genotype

c)

Dominant

d)

Recessive

15.

A sequence of DNA that determines a trait and passed from parent to offspring.

a)

Chromosome

b)

Gene

c)

Traits

d)

Genotype

16.

The science of heredity

a)

Heredity

b)

Any change to DNA

c)

Genetics

d)

Chromosome

17.
Having identical pairs of genes (alleles) for any given trait.
a)
genotype
b)
phenotype
c)
heterozygous
d)
homozygous
18.
Part of DNA located on the chromosomes.
a)
nucleus
b)
genes
c)
alleles
d)
ribosomes
19.
Genetic material that makes up chromosomes and genes.
a)
Alleles
b)
DNA
c)
Nucleus
d)
Cells
20.
The weaker gene in the trait that is “hidden”.
a)
recessive gene
b)
dependent gene
c)
dominant gene
d)
small allele
21.
The stronger gene in the trait that always shows up in the offspring.
a)
recessive gene
b)
independent gene
c)
dominant gene
d)
Big allele
22.
Alternative forms of a gene are called
a)
Alleles
b)
Homozygous
c)
DNA
d)
Genetics
23.
What does DNA stand for?
a)
Deoxyribonucleic acid
b)
Denitrogenous acid
c)
Deribonucleic acid
d)
Diribonucleic acid
24.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
25.
What does Mendel's law of dominance state?
a)
One allele will completely mask the other, producing the same phenotype in heterozygotes as in homozygotes 
b)
Alleles on different chromosomes are distributed randomly to gametes
c)
Dark colors are always dominant
d)
Genes are dominant over DNA
26.
Mendel's law of segregation states that during meiosis, the alleles that control each trait separate, and only _________________ from each pair is/are passed to the offspring
a)
one allele
b)
the dominant trait
c)
two alleles
d)
the recessive trait
27.
True or False:
A sex-linked gene would be found on an autosomal chromosome. 
a)
True
b)
False
28.
Which term(s) best describes the inheritance of human blood types? 
a)
incomplete dominance and multiple alleles
b)
codominance and epistasis
c)
codominance and multiple alleles
d)
incomplete dominance and codominance
29.
What is a Monohybrid Cross?
a)
The trait that appears in the homozygous condition.
b)
A diagram used to predict the probability of certain traits 
c)
A test that involves a single pair of genes, or one trait.
d)
The case when one allele is not completely dominant over another.
30.
In a dihybrid cross, _________ pairs of  traits are being crossed.
a)
one 
b)
two
c)
three
d)
four
31.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
32.
B = brown fur  b = white fur
In the punnett square, what is the probability for white fur? 
a)
0%
b)
25%
c)
50%
d)
75%
33.
In the punnett square shown, what is the genotypes of the two parents?
a)
RW and RR
b)
RW and WW
c)
RR and WW
d)
RW and RR
34.
This image shows a...
a)
Punnett Square
b)
Phenotype
c)
Genotype
d)
Dominant allele
35.
Cross Two Homozygous plants
(RRYY x rryy)
R = round seeds, r  = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds? 
a)
0%
b)
25%
c)
50%
d)
100%

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