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Heredity and Genetics
Heredity and Genetics
36 terms
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Answers
1
Inbreeding is the crossing of organisms that are
closely related
.
True
False
2
The gene that is hidden when a dominant gene is present is a(n)
recessive gene
hidden gene
dominant gene
3
The process by which new forms of DNA are produced is called
GMO
genetic engineering
genetic technology
4
When a pure tall pea plant is crossed with a pure short pea plant, the offspring are
medium height
short
both tall and short
tall
5
Male organisms have
three Y chromosomes
two Y chromosomes
one X and one Y chromosome
two X chromosomes
6
Mating of closely related organisms
Inbreeding
Controlled breeding
hybridization
7
Crossing plants with desirable traits over many generations is called
mass production
mass selection
quantity selection
8
The mating of two different kinds of organisms is called
inheritance
inbreeding
hybridization
9
A disease caused by an inherited abnormal gene is called a(n)
abnormal disease
trait disease
inherited disease
10
Organisms with two of the same genes for a particular trait are
hybrids
.
False
True
11
The characteristics of an organism are called
genes
traits
chromosomes
12
Combination of genes in which a mixture of both traits shows
blending
mixture
13
Threadlike structures that control heredity
Traits
DNA
Chromosomes
14
Gene that always shows itself
recessive
dominant
15
Traits that are passed from parents to their offspring
Inbred traits
Inherited traits
16
Traits that are inherited along with sex
birth traits
sex-linked traits
17
During reproduction, one
chromosome
from each pair goes to each offspring.
True
False
18
The process by which DNA is duplicated is called
replication
duplication
repetition
19
Chemical that makes up chromosomes
genetics
DNA
20
Moving a section of DNA from the genes of one organism to the genes of another organism
gene splicing
blending
gene dicing
21
A change in gene or chromosome is called a
mutation
.
False
True
22
Chart that shows possible gene combinations
Mendel Square
Punnett Square
Four Square
23
Mating organisms to produce offspring with certain traits
Replication
Controlled breeding
Blending
24
The trait of skin color is determined by
dominant genes
.
True
False
25
Sex-linked traits are found more often in
females
.
True
False
26
Triticale, produced by crossing wheat plants and rye plants, is an example of
mass selection
inbreeding
self-pollination
hybridization
27
The gene that carries sex-linked diseases is
dominant
.
False
True
28
Field of biology that studies heredity
Genetics
Genes
Mendelian Theory
29
The sides of a DNA ladder are made up of
melanin
proteins
sugars and phosphates
nitrogen bases
30
Organisms that have two unlike genes for a trait are ____________ for that trait
hybrid
pure
recessive
31
In the labeling of traits, a capital letter represents a
recessive
trait.
False
True
32
The field of biology that studies the inheritance of traits is
ecology
embryology
heredity
genetics
33
Humans have
23 pairs of chromosomes
21 chromosomes
46 pairs of chromosomes
23 pairs of chromosomes
34
An organism is ________ if it has two like genes for a given trait.
hybrid
pure
35
The parent who determines the sex of the offspring is the
female
.
True
False
36
The nitrogen base adenine always pairs with the nitrogen base
thymine
chromosomes
guanine
cytosine
