Mendelian Inheritance
Biology ⇒ Genetics and Heredity
Mendelian Inheritance starts at 8 and continues till grade 12.
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See sample questions for grade 9
A pea plant with genotype tt is crossed with a plant with genotype TT. What will be the genotype of the F1 generation?
Describe the difference between genotype and phenotype.
Explain the significance of Mendel’s Law of Independent Assortment.
Explain why Mendel’s work was not recognized until after his death.
If a homozygous dominant plant (TT) is crossed with a homozygous recessive plant (tt), what will be the genotype of all F1 offspring?
If a pea plant has the genotype YY, what is its phenotype for seed color?
If a plant with genotype RrYy is crossed with another RrYy plant, what is the probability of getting an offspring with genotype rryy?
If a plant with genotype Tt is crossed with another Tt plant, what are the possible genotypes of the offspring?
Which law states that allele pairs separate during gamete formation?
(1) Law of Segregation
(2) Law of Independent Assortment
(3) Law of Dominance
(4) Law of Probability
Which of the following best describes a dihybrid cross?
(1) A cross involving one trait
(2) A cross involving two traits
(3) A cross involving three traits
(4) A cross involving four traits
Which of the following best describes a homozygous genotype?
(1) Two different alleles
(2) Two identical alleles
(3) Three alleles
(4) No alleles
Which of the following best explains Mendel’s Law of Dominance?
(1) Both alleles are always expressed equally
(2) The dominant allele masks the effect of the recessive allele
(3) Alleles blend together
(4) Only recessive alleles are expressed
Fill in the blank: An organism with two different alleles for a trait is called _______.
Fill in the blank: The alternative forms of a gene are called _______.
Fill in the blank: The first generation of offspring in a genetic cross is called the _______ generation.
Fill in the blank: The observable characteristics of an organism are called its _______.
True or False: A heterozygous individual will always show the recessive trait.
True or False: A test cross is used to determine the genotype of an individual showing a dominant phenotype.
True or False: In Mendelian inheritance, a recessive trait is only expressed when both alleles are recessive.
True or False: In Mendelian inheritance, alleles are inherited independently if they are on different chromosomes.
