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WorksheetsStudy Guide Ch. 5 Genetics
Total questions: 133
Worksheet time: 2hrs 12mins
1. A Punnett square shows you all the ways in which ___________________ can combine.
alleles
eggs
sperm
colors
In a Punnett square, a capital letter stands for a _____________ allele.
recessive
dominant
heterozygous
homozygous
Of the following, which represents a homozygous recessive genotype?
TT
tt
Tt
TTT
In this cross between two pea plants, the offspring are
100% smooth.
50% smooth and 50% wrinkled.
75% wrinkled and 25% smooth.
75% smooth and 25% wrinkled.
A heterozygous orange-flowered plant is crossed with a homozygous purple-flowered plant. If orange is a dominant allele and purple is recessive, what color ratio will the flowers of the offspring plants have?
1 purple: 3 orange
4 purple: 0 orange
2 purple: 2 orange
0 purple: 4 orange
A man and a woman want to have a child, but the man is heterozygous (Cc) for a recessive trait that causes a fatal illness. What is the probability of a child’s inheriting the trait?
0%
25%
50%
75%
A and B are the same kind of fish. A has a genotype for narrow fins (ww), and B has a genotype for wide fins (W-). Which of the following genotypes of parent fish will produce only offspring having wide fins?
Ww and Ww
WW and ww
Ww and ww
ww and ww
Some ____________________ are due to environmental influences.
phenotypes
pedigrees
Punnett squares
offspring
Different forms of a gene are called ___________________________.
alleles
jeans
flowers
homozygous
A ____________________ square is a model that helps make genetic predictions.
Punnett
Pedigree
Podigree
Pungent
A(n) ____________________ is a visual tool for following a trait through generations of a family.
Punnett Square
Pedigree
Mobius strip
Applet
Identify three environmental factors that can affect an organism’s phenotype.
soil acidity or alkalinity, lifestyle choices, temperature
rain, power outage, temperature
lifestyle choices, memory, brain cells
parents, siblings, neighbors
A yellow pea plant (Yy) and a green pea plant (yy) could produce ____________________ green offspring.
1
2
3
4
Organisms with two different alleles for a trait are called _____________.
heterozygous
homozygous
heritage
complacent
When an intermediate form (mixed) is expressed in offspring
incomplete dominance
co-dominance
random dominance
legal dominance
When more than two alleles control a trait, it is called ________________.
co-dominance
multiple alleles
incomplete dominance
genes
The physical appearance of an organism is its
genotype
phenotype
blood type
mental type
Which of the following genotypes is heterozygous?
Bb
BB
bb
B
Deoxyribonucleic acid, a self-replicating material present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.
Chromosomes
Gene
DNA
Offspring
A unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring
Chromosomes
Gene
DNA
Offspring
Threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.
Chromosomes
Gene
DNA
Offspring
Passing on of physical or mental characteristics genetically from one generation to another.
Heredity
Asexual Reproduction
Trait
Sexual Reproduction
Feature of an organism,A characteristic that an organism can pass on to its offspring through its genes
Heredity
Asexual Reproduction
Trait
Sexual Reproduction
Describes a trait that covers over, or dominates another form of that trait.
Recessive Traits
Dominant Traits
Pedigree
Diverse
Trait that typically do not show in person unless both genes for the trait inherited.
Recessive Traits
Dominant Traits
Pedigree
Diverse
The study of heredity
Genotype
Phenotype
Zygote
Genetics
Genetic makeup of an organism
Genotype
Phenotype
Zygote
Genetics
A chart that shows all the possible combinations of alleles that can result from a genetic cross.
Probality
Punnett Square
Hybrids
Gregor Mendel
the likelyhood that a specific trait will occur.
Probability
Punnett Square
Hybrids
Gregor Mendel
Offspring of crosses between parents with different traits.
Probability
Punnett Square
Hybrids
Gregor Mendel
Having two of the same genes for the trait (sometimes called purebred).
homozygous
hetrozygous
protein
chromosome
Makes proteins using directions from DNA
nucleus
organelles
ribosomes
vacuole
What is DNA made of?
Sugar, Phosphate, nitrogen base
Phosphate, Adenine, nitrogen base
Thymine, Adenine, Cytomine
Phosphate, Nitrogen, Adenine
What are the 4 nitrogen bases?
adenine, thymine, cytoplasm, and guanine
adenine, thymine, cytosine, and guanine
adenine, thymine, cytosine, and gylcerol
adenine, thymine, cytosine, and glucose
ATG TGA CAG
DNA polymerase moves in the _________ to ____________ direction
3' to 5'
easiest
5" to 3"
9 to 5
Enzyme that connects the DNA to the backbone (glues)
Ligase
Polymerase
Helicase
Primase
Enzyme that breaks hydrogen bonds (unzips)
Ligase
Polymerase
Primase
Helicase
What is this monomer?
DNA
Nucleotide
Nitrogen base
Phosphate
Which enzyme is responsible for adding nucleotides?
Helicase
Ligase
Primase
Polymerase
Which mutation results from a nucleotide being added?
Insertion
Deletion
Substitution
Which mutation results from a nucleotide being changed?
Insertion
Deletion
Substitution
Which mutation results from a nucleotide being removed?
Insertion
Deletion
Substitution
where is the site of translation ?
ribosomes
telomerase
helicase
primase
