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 11
A pea plant with genotype Tt is self-pollinated. What is the expected genotypic ratio among the offspring?
A pea plant with genotype YYRR is crossed with a plant with genotype yyrr. What will be the genotype of the F1 generation?
A plant with genotype RrYy is crossed with a plant with genotype rryy. What proportion of the offspring will have round yellow seeds?
A test cross is used to determine the _______ of an individual showing a dominant phenotype.
If a heterozygous tall plant (Tt) is crossed with a homozygous short plant (tt), what percentage of the offspring are expected to be tall?
If a pea plant with yellow seeds (YY) is crossed with a plant with green seeds (yy), what will be the phenotype of the F1 generation?
If a plant with genotype Rr is crossed with a plant with genotype rr, what percentage of the offspring will be heterozygous?
If a plant with genotype TT is crossed with a plant with genotype tt, what will be the genotype of all F1 offspring?
Which of the following best defines a homozygous genotype?
(1) Two different alleles for a trait
(2) Two identical alleles for a trait
(3) One allele for a trait
(4) No alleles for a trait
Which of the following best describes Mendel’s Law of Independent Assortment?
(1) Alleles for a trait separate during gamete formation
(2) Alleles of different genes assort independently during gamete formation
(3) Dominant alleles always mask recessive alleles
(4) Genes are located on chromosomes
Which of the following best describes Mendel’s Law of Segregation?
(1) Each organism carries two alleles for each trait, which separate during gamete formation
(2) Alleles for different traits assort independently
(3) Dominant alleles always mask recessive alleles
(4) Genes are located on chromosomes
Which of the following best explains why Mendel’s work was not recognized until after his death?
(1) He published in an obscure journal
(2) His results were not accurate
(3) He did not use scientific methods
(4) He only studied animals
Fill in the blank: The alternative forms of a gene are called _______.
Fill in the blank: The cross between an individual of unknown genotype and a homozygous recessive individual is called a _______.
Fill in the blank: The first generation of offspring from a cross is called the _______ generation.
Fill in the blank: The genetic makeup of an organism is called its _______.
True or False: A Punnett square can be used to predict the genotypic and phenotypic ratios of offspring.
True or False: In a monohybrid cross, the F2 generation always shows a 1:2:1 genotypic ratio.
True or False: In Mendelian inheritance, a heterozygous individual will always display the dominant phenotype.
True or False: In Mendelian inheritance, the F1 generation is always heterozygous if the parents are homozygous for different alleles.
