
Bio Unit 9 - Topic 1 | Introduction to Mendelian Genetics
Presentation
•
Science
•
9th Grade
•
Easy
+2
Standards-aligned
Dilenia Gomez
Used 9+ times
FREE Resource
14 Slides • 8 Questions
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Multiple Choice
Why did Mendel choose pea plants for his experiments?
They are slow to grow and hard to breed.
They have many traits that are easy to observe and can self-pollinate.
They have only one trait.
They mutate quickly.
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7
Multiple Choice
What is the difference between a genotype and a phenotype?
Genotype is the physical appearance; phenotype is the genetic makeup.
Genotype is inherited traits only from the mother.
Genotype is the genetic makeup; phenotype is the physical appearance.
Genotype is the traits you choose to display.
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Multiple Choice
If two heterozygous green pea plants (Gg) are crossed, what percentage of their offspring are expected to be yellow?
0%
25%
50%
75%
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Multiple Choice
What does the Law of Segregation state?
Genes are linked together forever.
Traits are blended from both parents.
Only dominant traits are passed to offspring.
Organisms inherit one allele randomly from each parent for each trait.
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Multiple Choice
How is incomplete dominance different from codominance?
In incomplete dominance, both traits fully show separately.
In codominance, traits blend together. In incomplete dominance both traits show individually
In codominance, no traits are visible.
In incomplete dominance, traits blend together, while in codominance, both traits show separately.
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Multiple Choice
Artificial selection has produced many vegetables from the same ancestral plant. What does this show about traits?
Traits are fixed and cannot change.
Selective breeding can emphasize different traits over time.
Only physical appearance can change.
Genes mutate randomly without any human influence.
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Match
Match the term to the definition:
Genetic makeup
Specific copy of a gene
Physical expression of a trait
Diagram to predict offspring traits
Two identical alleles for a gene
Genotype
Allele
Phenotype
Punnett Square
Homozygous
Genotype
Allele
Phenotype
Punnett Square
Homozygous
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Match
Match the term to the definition:
A characteristic of a living thing (such as eye color or height)
Having two different alleles for a trait
An allele that is expressed even if only one copy is present
An allele that is only expressed when two copies are present
A specific sequence of DNA that codes for a trait
Trait
Heterozygous
Dominant
Recessive
Gene
Trait
Heterozygous
Dominant
Recessive
Gene
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