WorksheetsHeredity
Total questions: 20
Worksheet time: 2hrs 7mins
Name
Class
Date
1.
Heredity is the passing of traits from _____________________ to _____________________
a)
predators to prey
b)
water to rain
c)
parents to offspring
d)
fungi to protists
2.
___________________________ is the study of how traits are passed on, or inherited.
a)
dominant traits
b)
ratio
c)
phenotype
d)
genetics
3.
If a child has red hair, they inherited a certain _______________ from their parents.
a)
ratio
b)
trait
c)
probability
d)
sex chromosome
4.
One trait that is ALWAYS present and causes the other traits to disappear is a ________________________
a)
recessive trait
b)
aggressive trait
c)
absent trait
d)
dominant trait
5.
A ___________________ is a relationship between two numbers
a)
genetic
b)
trait
c)
ratio
d)
cycle
6.
A ________________________ is used to predict the possible genotype from certain parents
a)
Mendel Grid
b)
Genetic Tic Tac Toe
c)
Punnett Square
d)
Pedigree Plot
7.
_____________________ is the appearance of an organism, or how it looks
a)
phenotype
b)
ratio
c)
recessive trait
d)
heredity
8.
He is known as the father of modern day genetics.
a)
Gregory Mendel
b)
Greg Mendel
c)
Gregor Mendel
d)
Grace Mendel
9.
_____________________ are cells that join to make offspring
a)
speed cells
b)
sex cells
c)
pea cells
d)
pedigree cells
10.
How many pairs of chromosomes are in your cells?
a)
23
b)
19
c)
12
d)
10
11.
Which of the following cell types is formed by meiosis?
a)
muscle cells
b)
skin cells
c)
sperm cells
d)
blood cells
12.
Sperm and eggs are known as
a)
sex cells
b)
sex chromosomes
c)
sex genes
d)
true-breeding factors
13.
An allele whose trait always shows up in the organism when the allele is present.
a)
recessive allele
b)
dominant allele
c)
hidden allele
d)
present allele
14.
an organism's appearance or other detectable characteristic
a)
genotype
b)
phenotype
c)
genetics
d)
heterozygous
15.
Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.
a)
DNA
b)
protein
c)
RNA
d)
glucose nucleic acid (GNA)
16.
A characteristic that an organism can pass on to its offspring through its genes
a)
protein
b)
trait
c)
DNA
d)
gene
17.
In Meiosis,
a)
Chromosomes are copied twice
b)
the nucleus divides twice
c)
four cells are produced from a single cell
d)
All of the above
18.
Which process produces cells with half the number of chromosomes?
a)
Mitosis
b)
Meiosis
c)
True-Breeding
d)
Hybrid
19.
Organisms typically have more than one form of each gene. If one form can mask the appearance of another form, that form is considered ______________________ the other gene.
a)
dominant over
b)
recessive to
c)
better than
d)
worse than
20.
Different forms of a single gene are called a(n) _________.
a)
gene
b)
chromosome
c)
allele
d)
genotype
100 %
