What is the term for a measurable trait of an organism, such as eye color or height?
Explanation
This question tests the definition of 'phenotype,' a fundamental concept distinguishing observable traits from the underlying genetic makeup.
Other questions
What term describes different versions of a gene that may predispose an individual to a certain appearance or behavior?
According to the biographical information provided, what was Gregor Mendel's practical interest that motivated his experiments with hybrid crops?
In a Mendelian monohybrid cross, what is the expected genotypic ratio in the F2 generation?
What does Mendel's Law of Equal Segregation state?
What is a cross between two individuals who are both heterozygous for one gene called?
What is the primary purpose of using a Punnett square?
A monohybrid testcross (Aa x aa) is expected to always produce offspring in what phenotypic ratio of dominant to recessive?
Mendel's Law of Independent Assortment is based on his observation of what phenomenon in dihybrid crosses?
In a dihybrid cross of pea plants (YyRr x YyRr), where Yellow (Y) is dominant to green (y) and Round (R) is dominant to wrinkled (r), what is the expected phenotypic ratio of offspring?
If the probability of getting a dominant phenotype for gene A is three fourths and the probability of getting a recessive phenotype for gene B is one fourth, what is the probability of an offspring having both the dominant A phenotype and the recessive B phenotype, assuming independent assortment?
Why was Mendel's choice of pea plants as a model organism advantageous for his experiments?
What is the term for a cross where the same individual, such as a plant that can self-pollinate, contributes both gametes?
In a dihybrid Punnett square for a cross like RrYy x RrYy, what do the headers for the rows and columns represent?
When are the laws of independent assortment not followed by genes?
What is the expected phenotypic ratio for a dihybrid testcross, such as AaBb x aabb?
If you flip a fair coin four times, what rule of probability would you use to calculate the probability of getting four heads in a row?
What is the term for an individual that is heterozygous for two different genes?
In a cross of AaBbCc x AabbCc, what is the probability of an offspring with the genotype aabbcc?
How many rows and columns are required for a Punnett square tracking three independently assorting genes?
What is the correct way to write the genotype for an individual heterozygous for two genes, R and Y, according to genetic convention?
Who was the researcher that expanded Mendel's studies and devised the Punnett square?
In Mendel's crosses with pea plants for flower color, the F1 generation from a cross between true-breeding purple and true-breeding white plants were all purple. What did this demonstrate?
What is the term for a genotype that has two identical alleles for a particular gene, such as AA or aa?
What is the probability of obtaining an offspring with a genotype of AA or aa from a monohybrid cross (Aa x Aa)?
How many of the seven characters Mendel tested in pea plants showed a dominant to recessive phenotypic ratio of approximately 3:1 in the F2 generation?
What is meant by the term 'true-breeding' in genetics?
Which statement best describes the early hypothesis of 'blending inheritance' that was common during Mendel's time?
In a cross between an individual with genotype AaBb and another with genotype aabb, what fraction of the offspring would be expected to have the genotype Aabb?
Why was Mendel's work largely ignored for forty years after its publication?
The generation of offspring produced by crossing two individuals from the F1 generation is known as what?
In Mendel's experiments, what was the genotypic composition of the F1 generation plants resulting from a cross between true-breeding purple (AA) and white (aa) flowered plants?
Which of the following crosses would be considered a dihybrid cross?
When performing a testcross to determine the genotype of an individual with a dominant phenotype, what is the genotype of the 'tester' parent?
What are the four phenotypic classes produced from a dihybrid testcross involving genes A and B?
According to the text, what was the significance of Mendel's background in mathematics and chemistry for his genetic studies?
In the context of the Law of Independent Assortment, what is a 'recombinant phenotype'?
What is the probability of an offspring from a dihybrid cross (RrYy x RrYy) having both recessive traits (wrinkled and green)?
According to the chapter, what is the 'addition rule of probability' used to calculate?
What is considered a common mistake when setting up a Punnett square for a dihybrid cross?
In Mendel's crosses, how did he revise his F2 ratio after further self-fertilization revealed that not all dominant-phenotype individuals were true-breeding?
What is the term for a cross between an individual and one of its parents?
For a cross of AaBb x aabb, what fraction of the offspring will have the genotype aabb?
How did Christian Doppler, one of Mendel's mentors, influence his work?
If a dihybrid testcross (AaBb x aabb) produces 200 offspring, approximately how many are expected to show the phenotype for both dominant traits (AB)?
Which combination of parents represents a monohybrid testcross?
In a cross between two pea plants with genotypes RrYy, what fraction of the offspring are expected to have the genotype RrYy?
The phenomenon of 'hybrid vigor', which interested Mendel, refers to what observation?
What are the possible gametes that an individual with the genotype AaBb can produce, assuming independent assortment?
In Mendel's experiments, what was the phenotypic ratio of Round to wrinkled seeds in the F2 generation?