WorksheetsHeredity
Total questions: 46
Worksheet time: 37mins
Name
Class
Date
1.
A round watermelon is crossed with a long watermelon and all the offspring are oval. If two oval watermelons are crossed, what is the percent of watermelons that will be round?
a)
0%
b)
25%
c)
50%
d)
75%
2.
A round watermelon is crossed with a long watermelon and all the offspring are oval. This is an example of...
a)
codominance.
b)
incomplete dominance.
c)
sex-linkage.
d)
multiple alleles.
3.
A child is born with blood type O. All of the following could be the blood type of the parents EXCEPT...
a)
A and B
b)
A and A
c)
O and O
d)
AB and O
4.
The expression of both alleles for a trait in a heterozygous individual is called...
a)
sex-linkage.
b)
epistasis.
c)
codominance.
d)
incomplete dominance.
5.
A couple has 6 children, all girls. If the mother gives birth to a 7th child, what is the probability that the seventh child will be a girl?
a)
7 out of 7
b)
6 out of 7
c)
1 out of 2
d)
1 out of 7
6.
A male who has a sex-linked allele will pass it on to...
a)
all his daughters.
b)
all his sons.
c)
1/2 his daughters.
d)
1/2 his sons.
7.
The passing of DNA from parents to offspring is called...
a)
generation.
b)
heredity.
c)
inheritance.
d)
traits.
8.
What is a gene?
a)
an entire chromosome that codes for a trait
b)
a piece of clothing
c)
a piece of a DNA on chromosome that codes for a trait
d)
chemical messengers in your brain that code for a trait
9.
One trait that is ALWAYS present and causes the other traits to disappear is a...
a)
recessive trait.
b)
aggressive trait.
c)
George trait.
d)
dominant trait.
10.
A __________ is used to predict the possible genotypes from certain parents.
a)
Mendel Grid
b)
Genetic Tic-Tac-Toe
c)
Punnett Square
d)
Pedigree Foursquare
11.
__________ is the mathematical chance that something will happen.
a)
Division
b)
Selective breeding
c)
Ratio
d)
Probability
12.
Are recessive traits shown with capital or lowercase letters?
a)
Capital
b)
Lowercase
c)
Both
d)
Neither
13.
Human body cells have ____ pairs of chromosomes.
a)
46
b)
43
c)
23
d)
26
14.
The different forms of genes are known as...
a)
traits.
b)
environment.
c)
probability.
d)
alleles.
15.
How would you describe this genotype? BB
a)
Homozygous dominant
b)
Heterozygous
c)
Heterozygous dominant
d)
Homozygous recessive
16.
How would you describe this genotype? tt
a)
Homozygous dominant
b)
Homozygous recessive
c)
Heterozygous
d)
Heterozygous recessive
17.
How would you describe this genotype? Pp
a)
Homozygous dominant
b)
Heterozygous dominant
c)
Heterozygous
d)
Heterozygous recessive
18.
Which of the following genotypes is homozygous dominant?
a)
Hh
b)
pp
c)
HH
d)
aa
19.
Which of the following genotypes is heterozygous?
a)
Hh
b)
gg
c)
HH
d)
GG
20.
In dragons, scale color shows incomplete dominance. If a red (RR) dragon mates with a white (rr) dragon, what percentage of their offspring could be pink?
a)
100%
b)
75%
c)
50%
d)
0%
21.
In fruit flies, eye color is a sex-linked trait. If a male with red (R) eyes mates with a white-eyed (r) female, what percentage of their children will be white-eyed males?
a)
100%
b)
50%
c)
25%
d)
0%
22.
Colorblindess is a sex-linked, recessive trait. If Jade is colorblind, what MUST be true about her parents?
a)
Her mother is colorblind.
b)
Her father is colorblind.
c)
Her father has normal vision.
d)
Her mother has normal vision.
23.
All of the following can be seen in a karyotype except...
a)
the genetic code.
b)
autosomes.
c)
sex chromosomes.
d)
homologous pairs.
24.
Meiosis
a)
produces four sex cells, sperm or egg that are used to pass a parent’s traits to offspring
b)
cell reproduction- when one body cell becomes two
c)
the different forms of a characteristic
d)
the factor that controls a trait you exhibit
25.
Mitosis
a)
cell reproduction- when one body cell becomes two
b)
produces four sex cells, sperm or egg that are used to pass a parent’s traits to offspring
c)
contains your genes; found in the nucleus
d)
the factor that controls a trait you exhibit; found on chromosomes
26.
Phenotype
a)
the physical appearance of a trait (Ex: dimples, no dimples)
b)
combination of alleles (letters):DD,Dd,dd
c)
two alleles/letters for one trait that are the same (Ex: DD or dd)
d)
the letters that represent the different forms of a gene
27.
Genotype
a)
combination of alleles (letters):DD,Dd,dd
b)
the physical appearance of a trait (Ex: dimples, no dimples)
c)
two alleles/letters for one trait that are the same (Ex: DD or dd)
d)
two alleles/letters for one trait that are different (Ex: Dd)
28.
Alleles
a)
the letters that represent the different forms of a gene
b)
the different forms of a characteristic
c)
the passing of physical characteristics from parents to offspring
d)
contains your genes; found in the nucleus
29.
A gene located on the sex chromosome
a)
autosome
b)
sex-linked
c)
genetic disorder
d)
sex gene
30.
This is a chart used to analyze the pattern of inheritance that shows the relationships in a family.
a)
pedigree
b)
genotype
c)
genome
d)
karyotype
31.
The total chromosome number of a human male is often written as
a)
46, XX
b)
46, XY
c)
46, YY
d)
23, XY
32.
The genotype of the affected son and daughter at the bottom of this pedigree...
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
d)
Can't tell
33.
In the second generation-how many people are carriers of the trait?
a)
2
b)
3
c)
5
d)
6
34.
Examine the pedigree. The allele for the presence of a widow’s peak is dominant. Therefore, we can tell from the chart that in the couple labeled 2:
a)
the male is heterozygous and the female is homozygous.
b)
the male is homozygous and the female is heterozygous.
c)
the male is homozygous and the female is homozygous.
d)
the male is heterozygous and the female is heterozygous.
35.
a)
Not affected Female
b)
Not affected Male
c)
Affected Male
d)
Affected Female
36.
a)
Not Affected Male
b)
Not Affected Female
c)
Affected Male
d)
Affected Female
37.
a)
Not affected male
b)
Not affected female
c)
Affected male
d)
Affected female
38.
a)
Not affected male
b)
Not affected female
c)
Affected male
d)
Affected female
39.
What does a vertical line coming down from a square and circle that are connected by horizontal line indicate?
a)
They are cousins
b)
The children
c)
Aunts and Uncles
40.
What do we use pedigrees for?
a)
To look at families
b)
To make determinations about the offspring
c)
To track traits in families
d)
Nothing
41.
What is the mode of inheritance shown here?
a)
Autosomal Recessive
b)
Autosomal Dominant
c)
Sex Linked
42.
Color Blindness is a sex linked disease. Therefore, it HAS to affect which pair of chromosomes?
a)
21
b)
23
c)
24
d)
1-22
43.
Freckles (F) are dominant over nonfreckles. What is the phenotype of individual #3
a)
Ff
b)
ff
c)
freckles
d)
nonfreckles
44.
The genotype of the affected son and daughter at the bottom of this pedigree...
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
d)
Can't tell
45.
What is the relationship between person I 1 and III 2?
a)
Father and Son
b)
Father and Daughter
c)
Grandfather and Granddaughter
d)
Uncle and Niece
46.
Which individual in the first generation is a carrier?
a)
The male
b)
The female
c)
individual 1
d)
None of the above
100 %
