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WorksheetsGenetics Introduction to the Work of Gregor Mendel (12.1,12.2)
Total questions: 36
Worksheet time: 18mins
Who is Gregor Mendel
an Austrian Monk from the mid 1800s who contributed to the study of Genetics
The scientist who discovered the structure of DNA
a British scientist who discovered penicillin
The scientist who used X-Ray Crystallography to shed light on the structure of DNA
What did Gregor Mendel study?
Mold Spores
Pea Plants
Sun Flowers
Rats
Why were pea plants perfect a study on Heredity?
Pea plants are complex
They were easy to study
One gene controlled one trait. (i.e. it was simple)
One gene was controlled by multiple traits
What was Mendel's first conclusion?
Pea plants were inheriting a pair of genetic instructions from both parents.
Pea plants were inheriting genetic instructions from their grandparents.
Pea plants were inheriting genetic instructions only from their maternal parent.
Pea plants were inheriting genetic instructions only from their paternal parent
What was Mendel's Second conclusion?
The allele for tall plants was dominant to the short allele
The allele for tall plants was the same strength, equal dominance, to the short allele
The allele for tall plants was weaker, or more recessive, than the short allele
The allele for short plants was stronger, or more dominant, than the tall allele
Mendel's Law of Segregation means?
Every person has two alleles for each trait, they segregate from each other and the dominant is passed more often.
Every person has two alleles for each trait, Where two traits are being passed, they do not effect each other.
Every person has two alleles for each trait, they segregate from each other and are passed down at random.
Every person has two alleles for each trait, they segregate from each other and the recessive is passed more often.
Different gene choices for a trait that are usually represented by capital and lowercase letters.
Heredity
Alleles
Dominant
Recessive
This allele hides the presence of another allele
Dominant
Recessive
Homozygous
Heterozygous
Which accurately describes the Law of Segregation?
Each parent contributes a chromosome during fertilization
Alleles move apart
Each parent contributes one allele for each trait to their offspring
Chromosomes move apart
What is the likelihood that an event will occur?
Precognition
Probability
High chance
Low chance
This type of allele is represented by capital letters
Recessive alleles
Dominant alleles
Homozygous alleles
Heterozygous alleles
This type of allele is represented by lowercase letters
Recessive alleles
Dominant alleles
Homozygous Alleles
Heterozygous Alleles
What is the genetic makeup of an organism usually represented by letters?
Homozygous
Phenotype
Heterozygous
Genotype
What is the the appearance of an organism that is usually physically displayed through things like hair color or eye color?
Genotype
Homozygous
Phenotype
Heterozygous
We can use probability to predict...
Outcomes of genetic crosses
Whether offspring are homozygous
Whether offspring are heterozygous
Phenotype and genotype
The scientific study of heredity is known as
biology
psychology
genetics
principle of dominance
Fertilization is the process of
the joining of the male an female reproductive cells
cloning
the development of an embryo
recessive traits being masked
A specific characteristic of an individual, such as seed color or plant height, is known as a
gene
allele
hybrid
trait
A hybrid is an offspring resulting from
parents with the same traits
parents with different traits
"Factors" passed from parents to offspring that are responsible for an individual's traits
genes
alleles
hybrids
traits
Different forms of a gene, such as green and yellow seed color, are known as
genes
alleles
hybrids
traits
Mendel's principle of dominance states that
all alleles are dominant
all alleles are recessive
some alleles are dominant and some are recessive
organisms only display recessive alleles
Segregation of alleles refers to the fact that
both alleles for a gene from each parent are passed down to offspring
one allele for a gene from each parent are passed down to offspring
The sex cells (sperm & egg) are referred to as
Somatic cells
Gametes
Alleles
Genes
What the organism displays or expresses
Genotype
Phenotype
Fertilization that occurs when pollen from one plant lands on the pistil of a flower on the same plant
true breeding
hybrid
cross pollination
self pollination
heredity
Fertilization that occurs when pollen from one plant reaches the pistil of a flower on a different plant
true breeding
hybrid
cross pollination
self pollination
heredity
Plants that produce the same traits as parents when they are self pollinated
true breeding
hybrids
dominant
recessive
self pollination
The passing of traits from parents to offspring
dominant
recessive
hybrid
heredity
true breeding
What did Mendel conclude about inherited traits?
One factor(gene) controls each inherited trait
Two factors(genes) control each inherited trait
Multiple factors(genes) control each inherited trait
No factors(genes) control each inherited trait
Mendel made no conclusions
A true breeding purple flower plant crossed with a true breeding white flower plant will produce-
all white flower plants
all purple flower plants
mostly purple flower plants
no purple flower plants
pink flower plants
When Mendel crossed the two hybrid purple plants, what percent of the offspring had the dominant form of the trait?
0
25
50
75
100
When Mendel crossed the two hybrid purple plants, what percent of the offspring had the recessive form of the trait?
0
25
50
75
100
When Mendel crossed a true breeding purple flower plant with a true breeding white flower plants, what percent of the offspring were purple?
0
25
50
75
100
When Mendel crossed a true breeding purple flower plant with a true breeding white flower plants, what percent of the offspring were white?
0
25
50
75
100
What did Mendel find the ratio to be of dominant to recessive traits in a cross between two hybrid parents?
1:1
2:1
3:1
4:1
5:1
