WAEC (WASSCE) Biology · Biology of heredity (genetics)
Transmission and expression of characteristics in organisms: WAEC Biology Past Questions and Answers
What the WAEC syllabus covers in Transmission and expression of characteristics in organisms
Our summary: Which characters are inherited, and Mendel's experiments and laws.
- Hereditary variation (Reference should be made to characters that can be transmitted from generation to generation such as colour of skin, eye, hair, blood group, sickle cell, shape of face and nose.)
- Mendel's work in genetics: Mendel's experiments; Mendelian traits; Mendelian laws (Mendel's experiment with red and white flowered peas should be mentioned. Mendel's experiment on monohybrid and dihybrid inheritance should be mentioned. Reference should be made to dominant and recessive characters in plants and animals.)
Syllabus content © The West African Examinations Council (WASSCE (harmonised West African syllabus)).
WAEC (WASSCE) Biology questions on Transmission and expression of characteristics in organisms
- WAEC 2024A woman with blood group A gives birth to a child with blood group O. Which of the following blood groups cannot belong to the father?
- WAEC 2022Two tall plants were crossed and all the F1 plants were tall. when the F1 plants were selfed, some of the F2 plants were tall while others were short what are…
- WAEC 2021Plants suitable for experiments in genetics must not
- WAEC 2021In humans, pointed eyebrows (B) is a dominant trait over smooth eyebrows (b). A student and the mother have smooth eyebrows while the father has pointed…
- WAEC 2020Which of the following diseases can be inherited?
- WAEC 2019A man whose blood group is heterozygous B is married to a woman whose blood up is also heterozygous B Which of the following statements is correct about the…
- WAEC 2019The cross between RrTt and rrtt where R is a gene for red colour and T for tallness will result in …
- WAEC 2019In a complete dominance monohybrid cross between a pure breeding yellow-flowered plant Y and a pure breeding white-flowered plant y, the result of the first…
- WAEC 2018The greatest contribution to genetic studies was made by
- WAEC 2017Assuming that A is the gene for normal skin color and is dominant, while a is the gene for albinism and its recessive, what is the likely genotype of the couple…
- WAEC 2017Which of the following statements is true about mutation?
- WAEC 2016Which of the following scientists did not contribute to the development of genetics?
- WAEC 2015A woman with blood group A gives birth to a child with blood group O. Which of the following blood groups cannot belong to the father?
- WAEC 2015Which of the following statements about human blood groups is not true?
- WAEC 2014In dihybrid inheritance, Mendel considered
- WAEC 2014Which of the following diseases can be inherited?
- WAEC 2014The F1 generation of a cross between a red cock and white hen were all red because the gene for the
- WAEC 2013A man's blood group is AB. What is the probability of the man giving birth to a child with blood group O?
- WAEC 2013If a boy has blood type O and his mother has blood type A,what is the genotype of his father?
- WAEC 2012Two plants with red flowers were back crossed, which of the following results indicate that the plants are heterozygous red flowers, where red flowers are…
- WAEC 2012Which of the following diseases is transmittable through genes?
- WAEC 2012Two yellow-flowered hybrid plants each carrying a recessive factor for flowers with green colour were crossed. Which of the following ratios shows the correct…
- WAEC 2012In a case of complete dominance, what is the phenotypic ratio of the cross Bb X Bb; where B =black and b = white?
- WAEC 2011If a person has two alleles of the sickle cell anaemia gene, the person
- WAEC 2010What would be the phenotypic ratio of the offspring of a cross between a heterozygous dominant parent and a double recessive parent?
- WAEC 2010A man heterozygous for albino gene marries a woman who is also heterozygous for the gene. Both have normal skin colour. The probability that they will have an…
- WAEC 2010Which of the following statements about heredity is not true? In heredity the traits are
- WAEC 2010Mr. Andrew, his wife and child belong to blood groups A, B and O respectively. The genotypes of both parents are
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