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WorksheetsGenetics/Natural Selection
Total questions: 61
Worksheet time: 10mins
Name
Class
Date
1.
differences in physical traits of an individual from the group to which it belongs
a)
variation
b)
acquired trait
c)
inherited trait
2.
A characteristic that is passed from parent to offspring.
a)
inherited trait
b)
adenine
c)
uracil
3.
a trait influenced by the environment.
a)
acquired trait
b)
allele
c)
triplet/codon
4.
lasting or expected to last for a long time
a)
permanent
b)
amino acid
c)
thymine
5.
the special, normal, or proper activity of an organ or part
a)
function
b)
asexual reproduction
c)
survival
6.
a distinct feature or body part of an organism
a)
physical trait
b)
base pair
c)
Sugar (deoxyribose)
7.
characteristic relating to how an organism acts, like migration
a)
behavioral trait
b)
base sequence
c)
sexual reproduction
8.
trait
a)
characteristic
b)
behavioral trait
c)
RNA
9.
A group of individuals that belong to the same species and live in the same area
a)
population
b)
characteristic
c)
replication
10.
Passing of traits from parents to offspring
a)
heredity
b)
chromosomes
c)
recessive
11.
Different forms of a gene
a)
allele
b)
cross
c)
ratio
12.
A three-nucleotide sequence of DNA
a)
triplet/codon
b)
cytosine
c)
purebred
13.
two strands of nucleotides wound about each other; structure of DNA
a)
double helix
b)
deoxyribonucleic acid
c)
Punnett Square
14.
A segment of DNA on a chromosome that codes for a specific trait
a)
gene
b)
diversity
c)
protein
15.
A molecule found in DNA and RNA that encodes genetic information in cells.
a)
nitrogenous base
b)
dominant
c)
protein
16.
A building block of DNA, consisting of a five-carbon sugar covalently bonded to a nitrogenous base and a phosphate group.
a)
nucleotide
b)
double helix
c)
population
17.
one of the components of a nucleotide
a)
phosphate
b)
fit/fitness
c)
population
18.
An organic compound that is made of one or more chains of amino acids and that is a principal component of all cells
a)
protein
b)
frequency
c)
physical trait
19.
Together with the phosphate molecules makes the backbone of DNA
a)
Sugar (deoxyribose)
b)
function
c)
phosphate
20.
DNA
a)
deoxyribonucleic acid
b)
gene
c)
phenotypic ratio
21.
large molecule formed by joining smaller organic molecules together
a)
macromolecule
b)
generation
c)
phenotype
22.
The base that pairs with Guanine with DNA
a)
cytosine
b)
genetics
c)
permanent
23.
The base that pairs with Cytosine in DNA
a)
guanine
b)
genome
c)
offspring
24.
The base that pairs with Thymine in DNA
a)
adenine
b)
genotype
c)
nucleus
25.
The base that pairs with Adenine in DNA
a)
thymine
b)
genotypic ratio
c)
nucleotide
26.
A single-stranded nucleic acid that passes along genetic messages
a)
RNA
b)
guanine
c)
nitrogenous base
27.
Nitrogen base that pairs with adenine in RNA.
a)
uracil
b)
heredity
c)
natural selection
28.
A pair of complementary nitrogenous bases in a DNA molecule
a)
base pair
b)
heterozygous
c)
mutation
29.
Building blocks of protein
a)
amino acid
b)
homozygous
c)
mutation
30.
An organic compound that is made of one or more chains of amino acids and that is a principal component of all cells
a)
protein
b)
hybrid
c)
macromolecule
31.
the order of nitrogenous bases on a chain of DNA
a)
base sequence
b)
inherited trait
c)
inherited trait
32.
A part of the cell containing DNA and RNA and responsible for growth and reproduction
a)
nucleus
b)
macromolecule
c)
hybrid
33.
threadlike structures made of DNA molecules that contain the genes
a)
chromosomes
b)
mutation
c)
homozygous
34.
all of an organism's genetic material
a)
genome
b)
mutation
c)
heterozygous
35.
A change in a gene or chromosome.
a)
mutation
b)
natural selection
c)
heredity
36.
process of copying DNA prior to cell division
a)
replication
b)
nitrogenous base
c)
guanine
37.
An organism's genetic makeup, or allele combinations.
a)
genotype
b)
nucleotide
c)
genotypic ratio
38.
An organism's physical appearance, or visible traits.
a)
phenotype
b)
nucleus
c)
genotype
39.
An organism that has two different alleles for a trait
a)
hybrid
b)
offspring
c)
genome
40.
An organism that has both alleles for a trait the same
a)
purebred
b)
permanent
c)
genetics
41.
Describes a trait that covers over, or dominates, another form of that trait.
a)
dominant
b)
phenotype
c)
generation
42.
An allele that is masked when a dominant allele is present
a)
recessive
b)
phenotypic ratio
c)
gene
43.
type of reproduction in which cells from two parents unite to form the first cell of a new organism
a)
sexual reproduction
b)
phosphate
c)
function
44.
A reproductive process that involves only one parent and produces offspring that are identical to the parent.
a)
asexual reproduction
b)
physical trait
c)
frequency
45.
mating of two organisms
a)
cross
b)
population
c)
fit/fitness
46.
An organism that has two identical alleles for a trait
a)
homozygous
b)
population
c)
double helix
47.
An organism that has two different alleles for a trait
a)
heterozygous
b)
protein
c)
dominant
48.
a comparison of two numbers
a)
ratio
b)
protein
c)
diversity
49.
Product of reproduction, a new organism produced by one or more parents
a)
offspring
b)
Punnett Square
c)
deoxyribonucleic acid
50.
The scientific study of heredity
a)
genetics
b)
purebred
c)
cytosine
51.
A chart that shows all the possible combinations of alleles that can result from a genetic cross
a)
Punnett Square
b)
ratio
c)
cross
52.
the ratio of the genotypes that appear in offspring
a)
genotypic ratio
b)
recessive
c)
chromosomes
53.
the ratio of phenotypes produced by a cross
a)
phenotypic ratio
b)
replication
c)
characteristic
54.
A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits.
a)
natural selection
b)
RNA
c)
behavioral trait
55.
change in a DNA sequence that affects genetic information
a)
mutation
b)
sexual reproduction
c)
base sequence
56.
the ability of an organism to survive and reproduce
a)
fit/fitness
b)
Sugar (deoxyribose)
c)
base pair
57.
the rate at which something occurs or is repeated over a particular period of time
a)
frequency
b)
survival
c)
asexual reproduction
58.
one step in the line of descent of a family
a)
generation
b)
thymine
c)
amino acid
59.
A group of individuals that belong to the same species and live in the same area
a)
population
b)
triplet/codon
c)
allele
60.
variety
a)
diversity
b)
uracil
c)
adenine
61.
the ability to continue living
a)
survival
b)
variation
c)
acquired trait
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