Genetics - SS3 Biology Past Questions and Answers - page 1
Which of the following is the study of genes, heredity, and genetic variation in living organisms?
Geology
Genetics
Sociology
What term describes the passing on of genetic traits from parents to their offspring?
Mutation
Evolution
Heredity
Which of the following contributes to genetic variation in a population?
Cloning
Inbreeding
Genetic drift
What is the term used to describe the first-generation offspring resulting from the cross between two purebred individuals with different traits in Mendel's work?
Homozygotes
Heterozygotes
Hybrid
In Mendel's experiments with pea plants, which law states that the two alleles for a trait segregate during gamete formation and then unite randomly at fertilization?
Law of Dominance
Law of Independent Assortment
Law of Segregation
If a pea plant has the genotype "Tt" for a specific trait (where "T" represents the dominant allele and "t" represents the recessive allele), what will be the phenotype of the plant?
Dominant trait
Recessive trait
Intermediate trait
Which statement best describes monohybrid inheritance?
It involves the inheritance of two different traits from a single parent.
It involves the inheritance of a single trait from two different parents.
It involves the inheritance of a single trait from a single parent.
In dihybrid inheritance, how many pairs of contrasting traits are considered?
One pair
Two pairs
Three pairs
What is the primary difference between monohybrid and dihybrid inheritance?
The number of parents involved in the inheritance process.
The number of traits considered in the inheritance process.
Monohybrid inheritance involves only recessive traits, while dihybrid inheritance involves only dominant traits.
What is the purpose of a backcross in genetics?
To study the genetic traits of a purebred organism.
To introduce the genetic traits of one parent into the offspring of another parent
To determine the genotype of an individual with dominant traits.