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WorksheetsInheritance
Total questions: 40
Worksheet time: 55mins
Bb
heterozygous
Homozygous
Dominant allele
Recessive allele
Choose the one that represent true-breeding (also called "pure breeding")
AA x Aa
Aa x Aa
AA x aa
What are alleles?
different gene
different forms of the same gene
different proteins
different cells
Which answer includes the dominant homozygous genotype?
AA
Aa
aa
AB
Which answer contains the heterozygous genotype?
AA
aa
Aa
What is the definition of an allele?
An allele is a variant of a gene.
(variants = different types of something)
An allele is the genetic makeup of an organism
(organism = a living thing)
An allele is synonym for a gene.
(synonym = words meaning the same thing)
What is the definition of homozygous?
when one allele is dominant and one is recessive
when both alleles are the same
What is the definition of a genotype?
The genetic makeup of an organism
The physical traits of an organism.
When one allele is dominant and one allele is recessive.
When both alleles are dominant.
What is the definition of heterozygous?
When both alleles are dominant
When one allele is dominant and one is recessive.
When both alleles are recessive.
When one gene is dominant and one is recessive.
Heredity is the passing of traits from _____________________ to _____________________
predators to prey
water to rain
parents to offspring
offspring to parents
True or False:
We get 1/2 of our genes from our mother and 1/2 of our genes from our father
True
False
The observable traits. This is what you physically look like, or what gene is expressed. ex. Round Yellow
heredity
gene
allele
genotype
phenotype
The combination of alleles that you inherited from your parents. This is what you genes look like, the letters. ex. HhGg
heredity
gene
allele
genotype
phenotype
An organism with two dominant or two recessive alleles. Or same.
heterozygous
homozygous
An organism with one dominant and one recessive allele. Or different.
heterozygous
homozygous
Heredity is
the passing of traits from parents to offspring
the passing of money to parents
genes
alleles affect inheritance
a dominant allele is
a hidden gene
traits always shows up in the organism when the allele is present
the number that describes how likely an event is to occur
selective breeding
recessive allele
hidden when dominant is present
dominant allele
always present
GG
GG
Homozygous Dominant
Heterozygous Dominant
Homozygous Recessive
Heterozygous Recessive
gg
homozygous dominant
heterozygous dominant
homozygous recessive
heterozygous recssive
Gg
homozygous dominant
heterozygous dominant
recessive
genotype
an organisms genetic makeup or combination of alleles
genes expression
phenotype
heterozygous
phenotype
an organisms genetic makeup
the organisms physical appearance or visible traits
genotype
purebred
How many chromosomes do Humans have?
10
23
46
80
variation
any differences in between individuals of the same species
gene
trait
changes in mood
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
recessive
dominant
both
T - tall and t = short
In the Punnett square, what belongs in the missing square?
tt
Tt
TT
B = brown fur b = white fur
In the punnett square, what is the probability for white fur?
0%
25%
50%
75%
Each one of the boxes on the Punnett square represents what probability of an offspring's genotype?
25%
1%
10%
0%
What is ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness? T = tall t = short
0 in 4
1 in 4
2 in 4
4 in 4
