NEW
Font size
S
M
L
XL
WorksheetsGenetics -Essentials of Bio-EdoM
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
What would be the result of a cross between a heterozygous tall plant with a homozygous dominant tall plant? (T=tall, t=short) (create a Punnett square to help you)
a)
50% tall : 50% short
b)
25% tall : 75% short
c)
75% tall : 25% short
d)
100% tall
2.
What is a gamete?
a)
The chemical factor that determines the traits you have
b)
The form of a gene that is ALWAYS seen.
c)
The study of genes and heredity
d)
The sex cells (egg or sperm cell)
3.
What is fertilization?
a)
An organism with two of the same alleles for a gene
b)
The study of genes and heredity
c)
When an egg and a sperm cell combine to form a new individual
d)
Sex cells (egg or sperm cell)
4.
What is an allele?
a)
The study of genes and heredity
b)
Cross between parents with different traits
c)
Sex cells
d)
Different forms of a gene
5.
Organisms that have two of the same alleles for a particular trait are _________
a)
Hybrid
b)
Homozygous
c)
Heterozygous
d)
Dominant
6.
Which set of letters represent a heterozygous individual?
a)
Tt
b)
TT
c)
tt
d)
All of the others
7.
Which of the following explains a dominant allele?
a)
Two of the same alleles
b)
A trait that cannot be seen
c)
The trait that is ALWAYS seen
d)
The trait that is only seen when there are two identical copies present
8.
Which of the following are recessive?
a)
BB
b)
Bb
c)
bb
d)
all of the others
9.
What is a genotype?
a)
Two of the same alleles
b)
The two alleles (letters) that represent a gene
c)
The trait that is ALWAYS seen
d)
A trait that can be physically seen
10.
What is a phenotype?
a)
An organism with two of the same alleles for a gene
b)
The two alleles (letters) that represent a gene
c)
The form of a gene that is never seen
d)
A trait that can be physically seen
11.
What would be the result of a cross between a heterozygous tall plant with a homozygous dominant tall plant? (T=tall, t=short) (create a Punnett square to help you)
a)
50% tall : 50% short
b)
25% tall : 75% short
c)
75% tall : 25% short
d)
100% tall
12.
What symbol is used in a pedigree to represent a female that shows a trait?
a)
shaded circle
b)
shaded square
c)
blank circle
d)
blank square
13.
What is the possible genotype(s) for a tall plant? (T=tall, t=short)
a)
TT
b)
Tt
c)
TT and Tt
d)
tt
14.
What is the phenotype for a flower with the genotype Rr? (R=Red, r=white)
a)
Red .
b)
White
c)
Red and White
15.
What percent of the offspring would be heterozygous? A=Green a=Yellow
a)
25%
b)
50%
c)
75%
d)
100%
16.
What percentage of the offspring will be green? A=Green a=Yellow
a)
25%
b)
50%
c)
75%
d)
100%
17.
A homozygous dominant and a homozygous recessive individual are crossed. What will the genotype of the offspring be? (Create a Punnett square to help)
a)
All homozygous recessive
b)
All homozygous dominant
c)
All heterozygous
d)
50% homozygous recessive and 50% homozygous dominant
18.
The pedigree shows the recessive trait for albinism (a) in a family. How many total women are on the pedigree?
a)
5
b)
7
c)
6
d)
8
19.
The pedigree shows the recessive trait for albinism (a) in a family. What is the genotype of individual II-5?
a)
aa
b)
AA
c)
Aa
d)
none of the others
20.
The pedigree shows the recessive trait for albinism in a family. What is the genotype of individual’s I-1 and I-2? (Normal=N, Albinism=n)
a)
NN & NN
b)
NN & Nn
c)
nn & Nn
d)
Nn & nn
21.
The pedigree shows the recessive trait for albinism in a family. How many boys are afected by Albinismo? (Normal=N, Albinism=n)
a)
2
b)
3
c)
4
d)
5
22.
The pedigree shows the recessive trait for albinism in a family. Use a punneet square to find the percentage of offspring with albinism for the crossing of individuals I-1 and I-2. (Normal=N, Albinism=n)
a)
25%
b)
50%
c)
75%
d)
100%
23.
What is a gene?
a)
The chemical factor that determines the traits you have
b)
The form of a gene that is ALWAYS seen.
c)
The study of genes and heredity
d)
The sex cells (egg or sperm cell)
24.
Who is consider as the Father of Genetics?
a)
Amadeus Avogadro
b)
Gregory Mendel
c)
Albert Einstein
d)
Charles Darwin
25.
What organism was used in the early studies of Genetic by Mendel
a)
Flies
b)
Pea plants
c)
Guinea pigs
d)
white mice
Reset
