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WorksheetsGenetics
Total questions: 21
Worksheet time: 12mins
Name
Class
Date
1.
The type of inheritance pattern shown when a black-feathered chicken is crossed with a white-feather
a)
incomplete dominance
b)
inbreeding
c)
codominance
d)
polygenic inheritance
2.
Which of the following would be an example of codominant inheritance in humans
a)
Type A
b)
Type AB
c)
Type O
d)
Type B
3.
Why is it that males are more likely to inherit sex-linked traits than females?
a)
males require 2 copies of the allele
b)
males inherit the Y from their mother
c)
males and females inherit the same trait
d)
males require 1 copy of the allele
4.
Which law states the alleles are inherited separately from one another?
a)
codominance
b)
law of segregation
c)
law of independent assortment
d)
incomplete dominance
5.
A trait that can be hidden is
a)
recessive
b)
dominant
c)
homozygous
d)
heterozygous
6.
Long ears (E) are dominant over short ears (e). What's the long eared parent's genotype?
a)
EE
b)
Ee
c)
ee
d)
can't tell
7.
A plant with a genotype of Rr is
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
8.
If a phenotype expresses a recessive trait, then the genotype is
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
9.
In a cross between RR x rr, what would the genotypes of F1 be?
a)
RR and rr
b)
RR,Rr and rr
c)
RRrr
d)
only Rr
10.
The person known for his pioneering studies in genetics is
a)
Charles Darwin
b)
Crick
c)
Rosalind Franklin
d)
Gregor Mendel
11.
Any observable trait is the individual's
a)
genetics
b)
genes
c)
genotype
d)
phenotype
12.
A different form or variety of a gene is also known as:
a)
allele
b)
homozygous
c)
recessive
d)
dominant
13.
Which term describes an individual with two identical alleles for a particular trait?
a)
homozygous
b)
heterozygous
c)
dominant
d)
recessive
14.
When Mendel crossed purple flowers with pure white flowers, why were all the offspring purple?
a)
the purple allele is recessive
b)
the purple allele is dominant
c)
the white allele is dominant
d)
white and purple are codominant
15.
A cross between a white flower and a red flower makes a pink flower. This is:
a)
codominance
b)
incomplete dominance
c)
simple dominance
d)
sex-linked inheritance
16.
Huntington's Disease is considered what type of inheritance pattern?
a)
autosomal dominant
b)
autosomal recessive
c)
sex-linked dominant
d)
sex-linked recessive
17.
All of the non-shaded individuals will have what type of genotype?
a)
HH
b)
hh
c)
Hh
d)
H?
18.
The following pedigree is sexlinked recessive, all shaded individuals will have what genotypes?
a)
XAXA, XAY
b)
XaXa, XaY
c)
XAXa, XaY
d)
XaXa, XAY
19.
Hemophilia is recessive. In this cross, what are the chances of any child having it?
a)
0%
b)
25%
c)
50%
d)
100%
20.
If a son has hemophilia, he inherited it from
a)
his mother
b)
his father
c)
both parents
d)
neither parent
21.
The study of heredity - the passing on of traits - is called:
a)
genetics
b)
heredity
c)
biology
d)
botany
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