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WorksheetsGenetics Test
Total questions: 54
Worksheet time: 1hrs 20mins
If the dominant trait is having freckles (F) and the recessive trait is no freckles (f), which allele combination(s) below would represent a person who has freckles? (select all that apply)
FF
Ff
ff
The combination of genes a person has, represented by letters, is their...
Genotype
Phenotype
Chromosome
Punnett Square
In the punnett square below, what belongs in the missing square
Look at the punnett square shown. What allele pair would replace the "?"
WW
Ww
ww
Look at the punnett square. What is the probability that the offspring would have homozygous alleles for the trait?
100%
75%
50%
25%
0%
Which of the following allele pairs is heterozygous?
RR
ss
Having a Widow's Peak is dominant (W) over not (w). If parent A (WW) and parent B (ww) have a child, what is the likelihood that--
The child will have a widow's peak
100%
The child will not have a widow's peak
0%
The genotype of these children
Ww
Webbed fingers (F) are dominant over nonwebbed fingers (f). If parent A (Ff) and parent B (Ff) have children, which of the following are true? Select all that apply
Phenotypes: 75% chance of having webbed fingers and 25% chance of not.
Phenotypes: 100% chance of having webbed fingers and 0% chance of not.
Phenotypes: 25% chance of having webbed fingers and 75% chance of not
Genotypes: FF 25%, Ff 50%, ff 25%
Genotypes: FF 75%, Ff 50%, ff 25%
The genotype for a yellow plant is...
Who was the Austrian monk that experimented on pea plants and is called the "father of genetics"? (a)
The physical appearance of a trait is known as the-
genotype
phenotype
Homozygous
intelligence
Different versions of a trait (tall or short, white or purple) are called
alleles
traits
versions
genes
If something is heterozygous, it is also _____
purebred
hybrid
dominant
recessive
If A = red fur and a = white fur, what color fur would Aa be?
red
white
purple
blue
Match the following vocabulary words with their definitions
Genetics
The Scientific study of heredity
Heredity
The process in which characteristics are passed down from parents to offspring.
Trait
An organism's characteristics.
Genotype
The specific genetic make up or "code" for an individual.
Phenotype
The total physical appearance for an individual.
Which of the following genotypes is homozygous dominant?
A
Aa
AA
aa
In plants, tall (T) is dominant to short (t). Draw a punnett square and perform the following cross: Tt x Tt
What is the probability of producing a short plant?
0%
25%
50%
75%
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
What is the phenotype of a plant with the genotype Tt if T represents tall and t represents short?
Tall
Short
Medium
Variable
If a homozygous dominant tall pea plant (TT) is crossed with a homozygous recessive short pea plant (tt), what are the genotypes of the offspring?
All TT
All Tt
All tt
50% TT and 50% tt
What is the phenotype of an individual with a genotype of AaBb, assuming A and B are dominant alleles?
Dominant for both traits
Recessive for both traits
Dominant for A and recessive for B
Recessive for A and dominant for B
This type of inheritance pattern is a MIXTURE of two traits. This is known as ---
incomplete dominance.
codominance
What type of inheritance pattern is shown here?
Codominance
Incomplete dominance
A red flowered plant (RR) is crossed with a white flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have pink (RW) flowers?
0%
25%
50%
100%
Codominance occurs in calico cats, which allows for the Black and Tan colors to show. What percentage of the offspring will be calico (black and tan spotted)?
25
50
75
100
Some flowers are controlled by codominance. Red flowers (RR), blue flowers (BB) and Speckled flowers (RB).
Cross two speckled flowers.
1 red, 2 speckled, 1 blue
2 red, 2 blue
2 blue, 2 speckled
1 red, 1 speckled, 2 blue
A (a) is the physical, observable trait.
A (b) describes the types of alleles or DNA an organism has for their trait.
Match each genotype to its description
HOMOZYGOUS DOMINANT
RR
HETEROZYGOUS
Rr
HOMOZYGOUS
RECESSIVE
rr
Match the following for mitosis and meiosis.
PMAT happens once or twice
Mitosis & Meiosis
makes 4 genetically different cells
Meiosis
Sister Chromatids (already crossed over) pull apart
Anaphase 2 of Meiosis
Homologous Chromosomes pulled apart & Independent assortment
Anaphase 1 of Meiosis
makes 2 identical cells
Mitosis
how many chromosomes do human gametes have?
46
23
18
36
Name the phase:
Telophase I
Metaphase I
Anaphase II
Metaphase II
This term refers to the production of gametes by organisms that reproduce sexually
mitosis
binary fission
meiosis
cloning
What phase is this?
Telophase I
Prophase II
Metaphase I
Anaphase II
What phase is this?
Metaphase II
Prophase II
Telophase I
Anaphase I
What phase is this?
Prophase II
Prophase I
Anaphase II
Anaphase I
What phase is this?
Prophase II
Metaphase I
Anaphase II
Telophase II
(E= 3 eyes, e= 1 eye)
What is the genotype of the mama dragon?
What does it mean if an organism is heterozygous for a trait?
It has two identical alleles for a trait
It has two different alleles for a trait
It cannot inherit the trait
It has no alleles for the trait
