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WorksheetsGenetics Review
Total questions: 39
Worksheet time: 20mins
What is a characteristic?
An inherited quality
A quality shaped by the environment
A category of behaviour or appearance
A category of inheritance patterns
What is a trait?
An inherited characteristic shaped by the environment
An inherited characteristic not influenced by the environment
A category of behaviour or appearance
A category of inheritance patterns
In eukaryotes, which organelle is DNA usually found in?
cell membrane
vacuole
chloroplast
nucleus
ATG TGA CAG
A _______ is a segment of DNA that codes for a specific protein or RNA molecule.
gene
gamete
chromosome
chromatid
A _________ is DNA tightly coiled around proteins.
gene
chromosome
trait
mutation
How many chromosomes does a human body cell have, total?
48
46
23
47
Chromosomes that are paired by size and content are called _______ chromosomes.
homeostasis
homologous
matching
sister
Cells that contain 2 sets of chromosomes are called _________ (2n).
diploid
haploid
triploid
polyploid
Cells that contain only ONE set of chromosomes are called ________ (n).
diploid
polyploid
triploid
haploid
The chromosomes that are not involved in determining the sex of an individual are called __________.
sex chromosomes
mutations
autosomes
homologous
A version or variation of a gene
trait
characteristic
allele
heterozygous
This type of allele is expressed whether there are one or two copies present.
dominant
recessive
homozygous
heterozygous
When an organism has two different alleles, it is called
homozygous
heterozygous
recessive
dominant
These types of alleles are only expressed if the organism has two copies
dominant
recessive
homozygous
heterozygous
When an organism has two of the same alleles, it is called
homozygous
heterozygous
recessive
dominant
The alleles that an organism has
genotype
phenotype
chromosome
recessive
The observable expression of a trait
phenotype
genotype
chromosome
allele
Being able to roll the tongue is a dominant trait (T). Not being able to roll the tongue is a recessive trait (t). A persons genes are tt. Which trait would they have?
Able to roll the tongue
Not able to roll the tongue
Cannot be determined using the above information
Black hair (H) is a dominant gene in guinea pigs and black yellow (h) is recessive. What color hair would a guinea pig have if it got a recessive gene (h) from mom and a dominant gene (H) from dad?
Black hair
Yellow hair
Cannot be determined using the above information
What are the possible genotypes for this cross? And what percentage of each is produced?
TT = 25% Tt= 50% tt=25%
all tall
TT= 75% tt = 25%
Tt = 100%
What type(s) of cells undergo meiosis?
gametes
body cells
autosomes
eye cells
What is the order of phases in mitosis and meiosis?
Telophase, anaphase, metaphase, prophase
Prophase, metaphase, anaphase, telophase
Prophase, anaphase, metaphase, telophase
Anaphase, metaphase, prophase, telophase
Unlike mitosis, meiosis results in the formation of...
one haploid daughter cell
two haploid daughter cells
three haploid daughter cells
four haploid daughter cell
How does the DNA of the offspring formed from asexual reproduction compare to the parent?
none of the DNA is transferred to the offspring
half of the DNA is transferred to the offspring
the DNA of the offspring is identical to the DNA of the parent
none of these are correct
Which of the following describes the main advantages of sexual reproduction?
requires lots of time/energy
no new gene combos can arise
genetic diversity
looks identical to the parent
Changes in an organism that affect its appearance, how it behaves, and its functions.
Complication
Gamete
Mutation
Zygote
