WorksheetsHeredity
Total questions: 20
Worksheet time: 11mins
Name
Class
Date
1.
What did Gregor Mendel find out from his experiments?
a)
Pea plants only reproduce sexually
b)
There must be two sets of instructions for each characteristic
c)
Each parent gives two sets of genes to the offspring
2.
What is the definition of phenotype?
a)
An organisms appearance or other detectabe characteristics.
b)
The traits of an organism and how the organism grows
c)
Dominant and reccessive alleles
d)
The genetic makeup of an organism/ the combo of genes for one or more specific traits
3.
Genes are found on
a)
sex cells
b)
alleles
c)
chromosomes
d)
ribosomes
4.
What is a pedigree?
a)
A very important historical event
b)
An organism with more than one trait
c)
A diagram that tells you how heredity is passed down through the cells for many organisms
d)
A diagram that shows the occurrence of a genetic trait over several generations
5.
What is Mendel's middle name?
a)
Johann
b)
Goman
c)
Louis
d)
Francis
6.
What combines to make either XX or XY?
a)
DNA splits into x's
b)
egg and sperm
c)
meiosis
7.
What are the vocabulary words we wrote down.
a)
gene, allele, probability, one cell, no traits, many cells, one trait
b)
gene, allele, probability, one cell, many traits, many cells, one trait
c)
gene, allele, probability, one cell, many traits, many cells, one trait, environment
8.
Are recessive traits shown with capital or lowercase letters?
a)
Capital
b)
Lowercase
9.
An organism's appearance is known as it's....
a)
genotype
b)
allele
c)
gene
d)
phenotype
10.
When Mendel calculated the ratio of dominant to recessive traits, what ratio did he find?
a)
3:1
b)
9:5
c)
1:3
d)
2:8
11.
A punnet square is used for...
a)
finding the difference between certain parents and offspring
b)
to organize all the possible combinations from parents to offspring
12.
What are the possible combinations of a pea plant with the alleles PP and a male pea plant with the alleles pp.
P= purple
p= white
P= purple
p= white
a)
all Pp
b)
all PP
c)
Pp,PP,Pp,PP
d)
all pp
13.
The plant will be
a)
purple
b)
white
14.
The mathematical chance that something will happen is known as...
a)
chance
b)
luck
c)
probability
15.
Some traits are the result of several genes acting together. What is this known as?
a)
many genes, one trait
b)
one gene, many traits
16.
How many times are chromosomes copied during mitosis?
a)
twice
b)
four
c)
seven
d)
once
17.
Meiosis did not help explain other inherited traits in Mendel's experiments.
a)
true
b)
false
18.
Human body cells have ____ sets of chromosomes.
a)
46
b)
63
c)
23
19.
In asexual reproduction there is____ parent.
a)
two
b)
one
20.
The different forms of genes are known as
a)
traits
b)
environment
c)
probability
d)
alleles
100 %
