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WorksheetsGenetics Mystery
Total questions: 27
Worksheet time: 19mins
Name
Class
Date
1.
Dominica has her ears pierced. When she grows up and has a child, what is the probability her child will be born with pierced ears?
a)
0%
b)
25%
c)
50%
d)
100%
2.
Who is considered the "father of genetics"?
a)
Gregor Mendel
b)
Reginald Punnett
c)
James Watson
d)
Matthias Schleiden
3.
A dog gives birth to 5 puppies. What percentage of the chromosomes does each puppy share with the mother?
a)
25%
b)
50%
c)
75%
d)
100%
4.
Different forms of genes:
a)
alleles
b)
phenotype
c)
genotype
d)
heterozygous
5.
The passing of genetic traits from parent to offspring:
a)
allele
b)
gene
c)
heredity
d)
homozygous
6.
Which of the following BEST describes where genes are located in a cell?
a)
nucleus
b)
cytoplasm
c)
chromosomes
d)
chloroplast
7.
What is another way of saying "purebred"?
a)
homozygous
b)
dominant
c)
recessive
d)
heterozygous
8.
An organism's appearance or other observable characteristics is known as their
a)
phenotoype
b)
genotype
c)
recessive
d)
dominant
9.
An organism's genetic make-up:
a)
phenotype
b)
genotype
c)
dominant
d)
recessive
10.
Which of the following BEST describes what a carrier is?
a)
An organism that does not have a disease
b)
An organism that does have a disease
c)
An organism that does not have the disease, but they may pass the gene for the disease to their offspring
d)
An organism that has no chance of passing the disease to their offspring
11.
Albinism is a recessive disorder. An organism who is a carrier for albinism mates with another organism who is homozygous dominant. What is the probability their offspring will be an albino?
a)
0%
b)
25%
c)
50%
d)
100%
12.
Magda is a tall, 11 year old drummer. She has brown eyes and naturally curly hair. Which of her traits did Magda most likely acquire from her environment rather than genetics?
a)
height
b)
curly hair
c)
eye color
d)
ability to play drums
13.
The chances of an offspring having a certain trait
a)
genotype
b)
phenotype
c)
Punnett square
d)
probabiltiy
14.
Having two of the SAME alleles for a trait (example HH or hh):
a)
homozygous
b)
heterozygous
c)
recessive
d)
dominant
15.
Having two different alleles for a trait (example Hh):
a)
homozygous
b)
heterozygous
c)
dominant
d)
purebred
16.
An organism with the genotype bb is crossed with an organism with the genotype BB. What is the probability of the offspring being Bb?
a)
0%
b)
25%
c)
50%
d)
100%
17.
An organism with the Ff genotype is crossed with an organism that is Ff, what is the probability of the DOMINANT PHENOTYPE appearing in the offspring generation?
a)
25%
b)
50%
c)
75%
d)
100%
18.
A homozygous dominant parent and homozygous recessive parent produce offspring. What is the probability of the recessive trait appearing in the offspring generation?
a)
0%
b)
25%
c)
50%
d)
100%
19.
Two purebred recessive parents produce offspring. What is the probability of the dominant trait appearing in the offspring generation?
a)
0%
b)
25%
c)
50%
d)
100%
20.
Two heterozygous parents produce offspring. What is the probability of the HOMOZYGOUS DOMINANT GENOTYPE appearing in the offspring generation?
a)
75%
b)
25%
c)
50%
d)
100%
21.
Two heterozygous parents produce offspring. What is the probability of the HOMOZYGOUS RECESSIVE GENOTYPE appearing in the offspring generation?
a)
75%
b)
25%
c)
50%
d)
100%
22.
In eye color, the allele for brown coloring (B) is dominant, and the allele for blue coloring (b) is recessive. Which parents would have to cross in order to have a 100% chance of blue offspring?
a)
BbxBb
b)
bbxbb
c)
BBxbb
d)
BBxBB
23.
B=brown eyes
b= blue eyes
What is true about two brothers that have brown eyes?
One has genotype BB the other Bb.
b= blue eyes
What is true about two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
24.
What is another way of saying "hybrid"?
a)
heterozygous
b)
homozygous dominant
c)
homozygous recessive
d)
none of these choices
25.
Which of the following is true about dominant traits?
a)
the are more common than recessive traits
b)
they are better than recessive traits
c)
they are expressed when the dominant allele is inherited
d)
they are expressed when the recessive allele is not present
26.
Which of the following is true about recessive traits?
a)
They are only expressed if two recessive alleles are present
b)
They are less common than dominant traits
c)
They are better than dominant traits
d)
They are worse than recessive traits
27.
What is the relationship between genes, chromosomes and traits?
a)
Traits control genes and are located on chromosomes
b)
Genes control traits and are located on chromosomes
c)
Chromosomes control traits and are located on genes
d)
Chomosomes control traits and are located on genes
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