Non-Mendelian Inheritance
Biology ⇒ Genetics and Heredity
Non-Mendelian Inheritance starts at 10 and continues till grade 12.
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A cross between a red-flowered plant (RR) and a white-flowered plant (WW) produces all pink-flowered offspring (RW). What type of inheritance is this?
A cross between two pink snapdragons (RW) produces offspring in the ratio 1 red : 2 pink : 1 white. What type of inheritance does this demonstrate?
A plant with genotype RrYy is crossed with another plant of the same genotype. If the R and Y genes show epistasis, how might the phenotypic ratio differ from the classic 9:3:3:1 ratio?
Describe how epistasis can affect the expected phenotypic ratios in a dihybrid cross.
A cross between a red-flowered plant (RR) and a white-flowered plant (WW) produces all pink-flowered offspring (RW). What type of inheritance is this?
A cross between two pink snapdragons (RW) produces offspring in the ratio 1 red : 2 pink : 1 white. What type of inheritance does this demonstrate?
A plant with genotype RrYy is crossed with another plant of the same genotype. If the R and Y genes show epistasis, how might the phenotypic ratio differ from the classic 9:3:3:1 ratio?
A woman with a mitochondrial disorder has children with a healthy man. What is the probability that her children will inherit the disorder? (1) 0% (2) 25% (3) 50% (4) 100%
A woman with a mitochondrial disorder has children with a healthy man. What is the probability that her children will inherit the disorder? (1) 0% (2) 25% (3) 50% (4) 100%
A woman with type AB blood and a man with type O blood have a child. What are the possible blood types of their child? (1) A only (2) B only (3) AB only (4) A or B
Which blood type is an example of codominance in humans? (1) Type A (2) Type B (3) Type AB (4) Type O
Which of the following best describes epistasis? (1) One gene masks the effect of another gene (2) Both alleles are expressed equally (3) A single gene affects multiple traits (4) Genes are located on sex chromosomes
Fill in the blank: The inheritance of traits determined by genes located outside the nucleus is called __________ inheritance.
Fill in the blank: The inheritance of traits through chloroplast DNA is an example of __________ inheritance.
Fill in the blank: The inheritance pattern where a gene has more than two alleles in the population is called __________.
Fill in the blank: The inheritance pattern where a single gene affects multiple traits is called __________.
True or False: All genes that show non-Mendelian inheritance are located on autosomes.
True or False: All non-Mendelian inheritance patterns violate Mendel's law of segregation.
True or False: In codominance, both alleles in a heterozygote are fully expressed.
True or False: In codominance, the heterozygote expresses a phenotype that is intermediate between the two homozygotes.
