JAMB Biology · Heredity and variations

Probability in genetics and sex determination: JAMB Biology Past Questions and Answers

What the JAMB syllabus covers in Probability in genetics and sex determination

Our summary: Working out the likely offspring of a cross, and how sex is decided.

  • Probability in genetics and sex determination

Syllabus content © The Joint Admissions and Matriculation Board (UTME).

JAMB Biology questions on Probability in genetics and sex determination

  1. JAMB 2024In a cross involving a heterozygous red flower plant (Rr) and a white flowered plant (rr). What is the probability that the offspring will be Rr?
  2. JAMB 2024If the F1 generation allows for self-pollination, what will be the genotypic ratio of the offspring?
  3. JAMB 2023In monohybrid inheritance, if an organism carries two different alleles for a particular gene, it is called:
  4. JAMB 2022When a colour blind woman marries a normal man, what is the probability of their son being colour blind?
  5. JAMB 2021If both parents are heterozygous for a trait. the probability that an offspring will be recessive for that trait is?
  6. JAMB 2020The probability of a baby being a boy or a girl depends on the contribution of the
  7. JAMB 2016When sickle cell carrier marries a normal woman, the probability of them having a normal offspring is
  8. JAMB 2014A couple has 10 children, all female. Which of the following best explains the situation
  9. JAMB 2012When a colour-blind man marries a carrier woman. What is the probability of their offspring being colour blind?
  10. JAMB 2012A yellow maize is planted and all the fruits obtained are of yellow seeds. When they are croos-bred, yellow seeds and white seeds are obtained in a ratio 3:1…
  11. JAMB 2011The number of alleles controlling blood groups in humans
  12. JAMB 2011If the cross of a red-flowered plant with a white-flowered plant produces a pink-flowered plant, it is an example of
  13. JAMB 2010If both parents are heterozygous for a trait, the probability that an offspring will be recessive for that trait is?

Years with Probability in genetics and sex determination questions in DeeepSolve's question bank

From the past questions DeeepSolve holds, not a count of everything the exam body has set.

  • 2024
  • 2023
  • 2022
  • 2021
  • 2020
  • 2016
  • 2014
  • 2012
  • 2011
  • 2010