Download 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?