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Genetics Review
Genetics Review
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Genetics
Flashcards
41 cards
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Practice quiz
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Questions
41
Answers
1
What is a sequence of DNA that determines a trait & is passed from parent to offspring?
traits
hybrids
genes
cells
2
Which cell division process creates gametes like sperm and egg cells?
mitosis
transcription
translation
meiosis
3
A ____ shows all the possible combinations of alleles that can result from a genetic cross.
pie graph
histogram
bar graph
Punnett square
4
The genotype of Rr would be ________.
homozygous dominant
homozygous recessive
homozygous
heterozygous
5
What does a shaded square or circle represent on a pedigree chart?
Deceased
Does not have the trait
Has the trait
6
What does a circle represent on a pedigree chart?
Alive
Female
Deceased
Male
7
What is a genotype with two different alleles called?
homozygous
dominant
recessive
heterozygous
8
The missing genotypes in the square are
Bb
bb
impossible to tell
BB
9
What is a genotype with two identical alleles called?
heterozygous
homozygous
dominant
recessive
10
Brown eyes are dominant over blue. What are the chances of blue eyed offspring in this cross?
0%
100%
50%
25%
11
Which of the following is most likely an inherited trait?
handwriting
a scar
shoe size
accent
12
A green alien mates with a pink alien. The offspring are pink with green spots. What pattern of inheritance is this?
Incomplete Dominance
Codominance
None of the choices is correct
Dominant - recessive
13
What else can a characteristic of an organism be called?
gene
hybrid
trait
purebred
14
The offspring of ASEXUAL reproduction look exactly like the parents.
True
False
15
What is true about the image below.
There is a 75% probability of offspring being green.
There is a 50% probability of offspring being yellow.
There is a 50% probability of offspring being green.
There is a 75% probability of offspring being yellow.
16
What is the type of trait called that is passed from parent to offspring?
acquired
received
inherited
donated
17
Who is the “Father of Modern Genetics”? He is the man who did the experiments with pea plants.
James Watson
Gregor Mendel
Francis Crick
Charles Darwin
18
What does a square represent on a pedigree chart?
Alive
Deceased
Male
Female
19
What is the type of trait called that is not genetic?
acquired
altered
agenetic
inherited
20
If genes for purple flowers mask genes for white flowers, the white genes are
dominant
incompletely dominant
recessive
hybrid
21
P= Purple, p= white. If two white flowered plants cross, what % of the offspring will be white?
25
100
50
0
22
If an offspring is given a dominant and a recessive allele, which will show?
both
neither
recessive
dominant
23
In sexual reproduction, what portion of its genetic material does an offspring get from each parent?
0
25
50
75
24
What does a half-filled square or circle represent on a pedigree chart?
Married
Carrier of trait
Not related
25
____ is the likelihood that a particular event will occur.
probability
statistics
rule of dominance
Murphy's Law
26
What are genes that mask other genes called?
recessive
dominant
hybrid
true breeding
27
What are the visible characteristics of an organism called?
phenotype
cells
chromosomes
genotype
28
If heterozygous A and B blood parents have children, how many children will be heterozygous?
25% will be heterozygous
50 % will be heterozygous
0 % will be heterozygous
75 % will be heterozygous
29
The genotype of rr or RR would be ______.
homologous
heterozygous
heterologous
homozygous
30
Humans have ______ chromosomes in their body cells and ______ chromosomes in their sex cells.
46, 23
46, 46
46, 92
23, 46
31
My favorite class is
science
science
science
science
32
Which of the following would be used as the symbol for a dominant allele?
two capital letters
a lower case letter
a capital letter
a capital and a lower case letter
33
What is the study of passing traits to offspring called?
inheritance
heredity
chemistry
ecology
34
Which of the following would be used as the symbol for a recessive allele?
one capital letter
a capital and a lower case letter
one lowercase letter
two lowercase letters
35
What is the term for different versions of a gene?
trait
chromosome
genotype
allele
36
What percentage of the offspring will have RECESSIVE homozygous genotypes?
100%
25%
50%
0%
37
What is true about the image below.
The parents have different phenotypes.
The parents have a homozygous genotype.
The parents display the dominant phenotype.
The parents display the recessive phenotype.
38
Does asexual or sexual reproduction allow for variation?
Neither type does.
Asexual does, the offspring has the same DNA as the parent.
Sexual does, offspring has 1/2 their DNA from each parent.
Both types do
39
How many parents are involved in sexual reproduction?
zero
two
one
40
A red flower is crossed with a yellow flower. The offspring are all orange. What pattern of inheritance is this?
None of the choices are correct
Codominance
Incomplete dominance
Dominant - recessive
41
A homozygous dominant tall and a heterozygous plant make 200 offspring. What is the probability of tall offspring?
200
50
100
0
