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Genetics I Flashcards | StudBud
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Genetics I
Genetics I
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Reveiw for Uniti 3
Flashcards
27 cards
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Practice quiz
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Questions
27
Answers
1
Who is the scientist who took an X-ray of DNA?
Gregor Mendel
Sigmund Freud
Albert Einstein
Rosalind Franklin
2
A recessive allele is always symbolized by
a heterozygote
the use of numbers
the use of a capital letter
the use of a lower case letter
3
A dominant allele is always symbolized by
the use of a lower case letter
a special symbol ^#^
the use of a capital letter
numbers
4
Tt is an example of alleles for tall/short plants...this symbol is known as
Homozygous dominant
Homozygous recessive
Heterozygous
Pure line
5
A plant is tall (Tt). What is its phenotype?
Depends on if it is self-pollinated or not.
Tt
Green
Tall
6
What plant was Mendel so lucky to have chosen to study in his garden?
Raspberries
Bananas
Roses
Pea plants
7
A plant is tall (Tt). What is its genotype?
Green
Depends on it if is self-pollinated or not
Tt
Tall
8
How was Mendel able to identify pure line plants?
None of these are correct.
Just sheer luck, actually.
Because he self-pollinated them.
He wasn't able to identify pure line plants.
9
How does DNA copy itself?
C. DNA strand matches order of original DNA strand
B. DNA does not copy itself.
A. DNA nitrogen bases unzip and matches other bases.
D. A and C are correct.
10
Quickly (60 sec.) work out a cross between a TT x tt. The results would be
25% Tt
25% TT
25% tt
100% Tt
11
A dominant allele is one whose traits...
none of these are correct
always shows up
are subject to being mutated
Is masked
12
"Probability" best describes
chance
all of these are correct
what is likely to occur
ratio (occurrence divided by possible)
13
What can we say about the order of gene base pairs?
Adenine always connect to Thymine
They line up with specific other base pairs.
All of these statements are true.
They determine amino acids
14
What two forms do alleles come in?
D. A and B are correct.
C. blended
A. dominant
B. recessive
15
What is this a photograph of?
X-ray of DNA
X-ray of a phenotype
The Earth from space
A duck's bill
16
The rungs (ladder steps) of DNA includes all of these EXCEPT.
guanine
adenine
thymine
cells
17
Who was the Monk who became known as the Father of Genetics?
Mr. Crabs
Sandy Cheeks
Charles Roberts
Gregor Mendel
18
What is the phenotype of the 100% Tt offspring you just calculated?
100% Tall
100% Short
50% Tall
50% short
19
Why was Mendel considered lucky in choosing the pea plant.
Because he could also eat them for dinner.
Because their traits were only between two choices.
Because he could self-pollinate them.
Because it's easy to grow.
20
A gene is a section of
RNA
a cell
a DNA molecule
homozygous
21
What is the term for the passing of physical characteristics from parents to offspring?
Genetics
Heredity
Biology
Psychoanalysis
22
Parents pass traits to their offspring through ________________?
chromosomes
genotypes
Punnet squares
phenotypes
23
Which of the following is NOT a part of DNA structure?
double helix
recessive
nitrogen bases
twisted ladder
24
A recessive allele only shows up...
D. A and B are correct...and mean the same thing.
C. if heterozygous
A. if no dominant is present
B. only if homozygous
25
Alleles are
non-identical genes
different forms of a gene.
pure lines
genotypes
26
What is a purebred?
Plants that are hybrids.
None of these are correct.
Plants that are homozygous dominant or homozygous recessive.
Offspring from healthy parents.
27
How is a plant fertilized?
Plants do not require fertilization.
Plants always depend on insects to fertilize them.
By applying pollen from stamens to the pistles of the plant.
Only pure line plants are fertilized.
