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WorksheetsCh. 3 The Science of Heredity
Total questions: 20
Worksheet time: 10mins
A symbolic expression of the two alleles an individual possesses for a given gene.
karyotype
phenotype
genotype
F1
Who was the "Father of Genetics"?
Robert Hooke
Charles Darwin
Gregor Mendel
Socrates
This is an example of a(n)
karyotype
Punnett square
times table
Which represents an individual that is heterozygous?
AA
aa
Aa
AEAE
The scientific study of heredity is known as _________
chemistry
ecology
physics
genetics
The process of combining the male gamete (sperm cell) with the female gamete (egg cell) is __________ .
asexual reproduction
fertilization
crossing over
binary fission
The chromosome theory of inheritance states that genes are passed from parents to offspring on
RNA
zygotes
centrioles
chromosomes
In Gregor Mendel's classic experiment, he crossed two "purebred" plants (tall X short). We could also say that they were
homozygous
heterozygous
hybrid
all the same genotypes
The process through which reproductive cells are made is
meiosis
mitosis
fertilization
cell division
Which correctly gives an example of an inherited trait, and then an acquired trait?
dyed hair, ear piercing
eye color, shape of nose
dyed hair, eye color
eye color, dyed hair
The cells produced through meiosis have half the number of chromosomes as body cells.
twice
half
equal to
do not contain chromosomes
Which allele is dominant, green or yellow?
green
yellow
they show incomplete dominance
they are codominant
What trait is being examined in this cross?
yellow pea pods
green pea pods
the length of the stems
the color of the pea pod
Which of the following does NOT lead to diversity between members of a species?
sexual reproduction
crossing over (genetic recombination)
asexual reproduction
random sperm cells fertilizing egg cells
A homozygous recessive individual is crossed with a heterozygous individual. What is the probability of having the recessive trait in the offspring?
100%
75%
50%
25%
What genotype belongs in the top left box?
rr
RR
Rr
R
What genotype belongs in the top right box?
RR
rr
Rr
r
What genotype belongs in the bottom right box?
RR
rr
Rr
r
What is the probability of having an offspring with the dominant trait?
100%
0%
50%
75%
What is the probability of having an offspring with the recessive phenotype when you cross a homozygous dominant with a heterozygous individual?
100%
50%
0%
25%
