Chapter 5 PPT Review
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Transcript Chapter 5 PPT Review
Review
The passing of
traits from parents
to offspring is
called ______.
heredity
The different forms
of a trait that a gene
may have are called
_____.
alleles
The study of
how traits are
inherited is the
science of _____.
genetics
In a Punnet square, the
letters stand for ______.
A. dominant alleles
B. recessive alleles
C. both a and b
D. neither a nor b
C
The genetic
makeup of an
organism is
called its _____.
genotype
The way an organism
looks and behaves as a
result of its genetic
makeup is called its
_____.
phenotype
In a Punnett
square, a capital
letter (T) stands
for a _____ allele.
dominant
The combination Tt
represents a _____ genotype.
A. heterozygous
B. homozygous
C. purebred
D. recessive
A
Experiments with
four o’clock flowers
produced examples
of _____ dominance.
incomplete
Blood type is an example of
______.
A. multiple alleles
B. a pair of genes
C. polygenic inheritance
D. sex-linked genes
A
Color blindness is an
example of _____.
A. a sex-linked disorder
B. incomplete dominance
C. a genetic disorder
D. polygenic inheritance
A
Genetic engineering has already
helped people by _____.
A. altering pedigrees
B. curing Down’s syndrome
C. eliminating infant deaths
D. producing medicine
D
Through recombinant DNA,
scientist have been able to _____.
A. cure color blindness
B. create new breeds of dogs
C. alter viruses
D. improve tomatoes
D
Who is known
as the father of
genetics?
Gregor
Mendel
Organisms that
receive different alleles
from each parent are
called _____.
hybrids
What term
describes an
organism with two
alleles that are the
same?
homozygous
What term describes
an organism with two
different alleles for a
trait?
heterozygous
What term describes
a group of gene pairs
acting together to
produce a trait?
polygenic
inheritance
Errors occurring in
the DNA when it is
copied inside a cell
are called _____.
mutations
The passing of
traits from parents
to offspring is
called _____.
heredity
The different forms
of a trait that a gene
may have are called
_____.
alleles
In a Punnett
square, the letters
stand for ______
and _____ alleles.
dominant,
recessive
The genetic
makeup of an
organism is
called its _____.
genotype
The way an organism
looks and behaves as a
result of its genetic
makeup is called its
_____.
phenotype
Vocabulary
passing of traits
from one
generation to
another
heredity
inserting
DNA into
bacteria
recombinant
DNA
study of
inheritance
genetics
an allele
inherited on a
sex chromosome
sex-linked
gene
a trait that is
hidden
recessive
the chance
that an event
will take place
probability
genetic
makeup of an
organism
genotype
a normal
allele is placed
into a virus
gene therapy
physical
appearance
resulting from
genotype
phenotype
both alleles
are express in
offspring
incomplete
dominance
more than one
set of genes
controls a trait
polygenic
inheritance
True/False
Genetic engineering is
the practice of changing
the arrangement of DNA
through biological and
chemical methods.
True
In gene therapy a
normal allele is placed in
a virus, which delivers
the allele when it infects
its target cell.
True
An allele inherited
on a sex
chromosome is
called a sex-linked
disorder.
False, sexlinked gene
Environmental
influences cannot
have an impact on
phenotype.
False, can
Environmental
influences can be
internal or
external.
True
Gregor Mendel was
the first experimenter
to trace one trait
through several
generations.
True
Mendel called plants
that had received
different alleles for a
trait from each parent
genes.
False, hybrids
A given allele’s
effect is
dominant or
recessive.
True
An organism with
two alleles that are
the same is called
heterozygous.
Multiple Answers
False,
homozygous
An organism that
has two different
alleles for a trait is
called homozygous.
False,
heterozygous
A trait produced
by a combination
of many genes is
called polygenic.
True
Multi point question
Create a Punnet Square
where the father is
homozygous dominate
for cleft chin and mother
is homozygous recessive
for no cleft chin.
What are the
genotypes and
phenotypes for
their offspring?
Create a Punnet Square
where the father is
heterozygous for dominate
dimples and the mother is
heterozygous for dominate
dimples.
What are the
genotypes and
phenotypes for
their offspring?