Questions and Answers
What is Mendel's Law of Segregation?
During gamete formation, the alleles segregate from each other so that each gamete carries only one allele for each gene.
What does Mendel's Law of Independent Assortment state?
Genes coding for different traits segregate independently during the formation of gametes.
What is Monohybrid Inheritance?
The inheritance of a characteristic controlled by a single gene.
Which allele representation indicates a purple flower due to complete dominance?
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What is the result of Co-dominance?
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What do Lethal Alleles cause?
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Multiple Alleles refer to having only two possible alleles for a trait.
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Match the types of inheritance with their definitions:
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Study Notes
Mendel's Law of Segregation
- Alleles separate during gamete formation, resulting in each gamete containing one allele for each gene.
Mendel's Law of Independent Assortment
- Genes for different traits assort independently during gamete formation, leading to genetic variation.
Sources of Variation in Gene Pool
Monohybrid Inheritance
- Involves inheritance of a characteristic determined by a single gene.
Types of Inheritance
Complete Dominance
- One allele completely masks the expression of another.
- Results in clear phenotypic differences:
- "PP" produces purple flowers
- "pp" produces white flowers
- "Pp" also yields purple flowers
Co-dominance
- More than one dominant allele is present, leading to the expression of both phenotypes.
- Examples demonstrate simultaneous expression:
- "WW" results in white flowers
- "PW" produces pink flowers
- "PP" yields purple flowers
Incomplete Dominance
- Neither allele is fully dominant, resulting in a blending of traits.
- Heterozygous genotype displays intermediate phenotype:
- "PP" shows red flowers
- "Pp" appears pink
- "pp" results in white flowers
Lethal Alleles
- Certain alleles can lead to the death of the organism.
- Can manifest as either dominant or recessive:
- Example: "XX" can be lethal
Multiple Alleles
- A single trait may have three or more possible alleles contributing to genetic diversity.
- Example traits include:
- Multiple alleles for eye color (blue, brown, green)
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Description
Explore Mendel's foundational laws of inheritance, including the Law of Segregation and the Law of Independent Assortment. This quiz covers topics such as monohybrid inheritance and sources of variation in the gene pool. Test your understanding of these key concepts in genetics!
