What is the meaning of a dominant trait?
Answer and explanation
Correct answer: A trait that appears even in a mixed condition
The governing concept is Mendelian dominance. A dominant trait is expressed in the phenotype when its allele is present in either a homozygous or a heterozygous condition, so it can appear even when a contrasting recessive allele is also present. For example, Mendel observed tallness as dominant over dwarfness in pea plants. Therefore option A is correct; a dominant trait is not necessarily acquired and is not restricted to fossils.
Frequently asked questions
What is the correct answer to this question?
A trait that appears even in a mixed condition
Why is this the correct answer?
The governing concept is Mendelian dominance. A dominant trait is expressed in the phenotype when its allele is present in either a homozygous or a heterozygous condition, so it can appear even when a contrasting recessive allele is also present. For example, Mendel observed tallness as dominant over dwarfness in pea plants. Therefore option A is correct; a dominant trait is not necessarily acquired and is not restricted to fossils.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Heredity and Evolution. Topic: Mendel’s laws.
