12 Questions
What is the basic unit of heredity?
Gene
Which of the following pairs of nitrogenous bases are found in DNA?
Adenine - Thymine, Cytosine - Guanine
What is the term used to describe the combination of alleles an organism inherits from its parents?
Genotype
Which of the following represents a dominant trait?
Capital letter
What is the term used to describe the physical appearance or expression of traits in an organism?
Phenotype
What is the term used to describe the diversity or differences between individuals or populations?
Variation
What is the Law of Segregation?
Each inherited trait is defined by a gene pair, and parental genes are randomly separated to the sex cells.
What does the Law of Independent Assortment state?
Genes for different traits are sorted separately from one another so that the inheritance of one trait is not dependent on the inheritance of another.
What is the Law of Dominance?
An organism with alternate forms of a gene will express the form that is dominant.
What is complete dominance?
It occurs when one allele or version of a gene completely masks another.
What is incomplete dominance?
It refers to a circumstance in which the two copies of a gene for a particular trait, or alleles, combine so that neither dominates the other.
What is codominance?
It is a relationship between two versions of a gene where neither allele is recessive, and the phenotypes of both alleles are expressed.
Test your knowledge on genetics basics including genes, variation, heredity, nucleotide bases, DNA, RNA, traits, diversity, and genetic heritage. Explore concepts related to the study of genes and their inheritance.
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