10 Questions
What is a recessive gene?
A gene that can be hidden by the dominant version
What do alleles refer to?
Two copies of a gene, which can be slightly different from each other
When does a recessive allele produce a recessive phenotype?
When the individual has two copies of the recessive allele
What does a dominant allele produce in individuals who have one copy of the allele?
A dominant phenotype
What is the function of genes in an organism's DNA?
Contain the code for certain characteristics and are passed down from the parents to the offspring
What is the function of genes in an organism's DNA?
Contain the code for certain characteristics
What does a dominant gene mean?
It cannot be covered up
What do alleles refer to?
Two copies of a gene that can be slightly different from each other
When does a recessive allele produce a recessive phenotype?
When the individual has two copies of the recessive allele
What is the impact of variations in protein activity or expression on an organism's traits?
They can produce different phenotypes (physical characteristics)
Study Notes
Genes and Alleles
- A recessive gene is a type of gene that will only be expressed if an individual has two copies of the gene, one from each parent.
- Alleles refer to different forms of a gene that occupy the same position on a chromosome.
- A recessive allele produces a recessive phenotype when an individual has two copies of the allele, one from each parent.
Dominant Alleles
- A dominant allele produces a dominant phenotype in individuals who have one copy of the allele, inherited from either parent.
Gene Function
- The function of genes in an organism's DNA is to provide instructions for the development and function of an organism.
- Genes are responsible for creating proteins, which are essential for various cellular functions and processes.
Dominant Genes
- A dominant gene is a gene that will be expressed if an individual has one copy of the gene, inherited from either parent.
Impact of Variations
- Variations in protein activity or expression can have a significant impact on an organism's traits, resulting in changes to its physical characteristics, behavior, or susceptibility to diseases.
Test your knowledge of dominant and recessive genes with this quiz. Explore the inheritance patterns of traits and understand how genes are passed down from parents to offspring.
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