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WorksheetsQuizziz - Genetics Basics
Total questions: 20
Worksheet time: 15mins
What is an allele?
A slippery, long animal that lives in the water
a version of a trait
a kind of cell that has DNA
If I told you the answer, how are you ever going to learn?
Which of the following are PHENOTYPES?
red hair
Gg
seven toes
SS
cc
Which of the following are GENOTYPES?
crooked pinky finger
Dd
Orange teeth
ff
A genotype with two dominant alleles is known as:
Homozygous dominant
homozygous recessive
heterozygous
A genotype with two different alleles is known as:
homozygous dominant
homozygous recessive
heterozygous
In humans, the ability to "roll" your tongue is dominant (R) over not being able to roll your tongue (r). Which of the following genotypes would show a person who CAN roll their tongue?
rr
Rr
RR
Monsters with red skin have the dominant trait. Which of the following could be the genotype of this monster?
rr
red skin
Rr
RR
The term used to describe a purebred organism when two identical alleles are present.
heterozygous
homozygous
recessive
dominant
In humans, the widow's peak allele is dominant and the no widow's peak allele is recessive. A person who is homozygous dominant would create gametes _________.
W and w
none of these answers
W and W
w and w
Tallness (T) is dominant to shortness (t) in pea plants. Which of the following represents a genotype of a pea plant that is heterozygous for tallness?
Tt
TT
tt
Ss
A plant's alleles for white flowers are "pp". What can you say for certain about the plant's parents?
both parents were pp
both parents were Pp
both parents were white
both parents contributed a recessive allele
When might a dominant trait appear?
When an organism has a dominant and a recessive allele
In the absence of recessive alleles
When an organism is heterozygous
All of these
Purple flowers are dominant over white flowers. What is the probability of white flowers in this cross: PP x pp
100%
50%
25 %
0 %
The law that says alternate forms of a gene separate during the formation of gametes; they do not mix to form a new trait
Law of segregation
law of independent assortment
law of inertia
law of acceleration
A law that explains how traits are inherited independently or other traits (blue eyes are NOT inherited with blond hair)
law of independent assortment
law of segregation
law of gravity
law of inertia
The offspring of many generations that have the SAME traits.
Purebred
Hybrid
Dominant allele
Recessive allele
How many alleles (letters) does a child get from EACH parent for each trait?
1
2
3
4
(E= 3 eyes, e= 1 eye)
