Genetics 1 - Medimagsolutions

Test Your Genetics Knowledge! Part 1

Are you ready to challenge yourself and uncover gaps in your understanding of genetics? Our carefully crafted quiz is designed just for you!

Drawing from the insights of renowned texts, including Idodo Umeh and Modern Biology, each question has been thoughtfully selected to cover key concepts in genetics, providing you with a comprehensive review. This quiz also features questions from past JAMB and WAEC exams, ensuring that you’re not just practicing with relevant material but also effectively preparing for your upcoming assessments.

Why Take This Quiz?

Comprehensive Coverage: Explore all the essential genetics concepts that are crucial for your success.
Real Exam Questions: Familiarize yourself with the format and style of questions you’ll encounter in actual exams.
Immediate Feedback: Discover the correct answers right away and delve into detailed explanations in the accompanying textbooks.
Boost Your Confidence: Enhance your understanding and improve your performance in preparation for JAMB and WAEC genetics questions.

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Agodirin

Genetics 1

Welcome to Genetics and Variation Quiz . The pass mark for this quiz is 90%. Best of Luck!

1 / 50

1. The Australian monk that is credited for being the father of the modern knowledge of genetics is

A) John Hunter

B) Gregor Mendel

C) Charlse Darwin

D) Alexander fleming

2 / 50

2. A cross where only one characteristic is considered is refered to as

A) Monohybrid

B) Singlehybrid

C) Ultimatehybrid

D) Unihybrid

3 / 50

3. which of the following characteristics is not influenced by genetic inheritance

A) color of hair

B) behavior

C) color of eyes

D) language

4 / 50

4. Which of the following is responsible for the color of skin in human beings

A) Sweat gland

B) Red cells

C) white cells

D) Melanin pigment

5 / 50

5. the diploid number of chromosomes is

A) 4n

B) 2n

C) n

D) 3n

6 / 50

6. A pair of contrasting gene occupying same locus on a chromosome are called

A) Phenotypes

B) Hybrid

C) Genotypes

D) Allele

7 / 50

7. The physical manifestation of the genetic inheritance is called

A) Allele

B) Genotype

C) Phenotype

D) Hybrid

8 / 50

8. which of the following is not determined by DNA

A) The kind of food

B) The kind of enzyme an organism secretes

C) The height of the man

D) the type of Melanin pigment on the skin

9 / 50

9. A trait that is expressed in the presence of another character that is suppressed is called

A) Phenotype

B) Recessive

C) Dominant

D) Monhybrid

10 / 50

10. R stands for Round leaves and r for wrinkled leaves. If parent with Rr cross parent with Rr , which of the following will occur in the off-spring leaves

A) Most will be wrinkled and few will be round

B) All will be wrinkled

C) Half will be round and half will be wrinkled

D) Most will be round and few will be wrinkled

11 / 50

11. The individual inherits one gene from the mother and another from the father. If the gene from the mother does not manifest due to the presence of the gene from the father. The gene from the mother is said to be

A) Recessive

B) Passive

C) Dominant

D) Shy

E) Active

12 / 50

12. Which of the following is not present in RNA

A) Uracil

B) Cytosine

C) Thymine

D) Guanine

13 / 50

13. which of the following will be the ratio of the phenotype of the offsprings when Rr cross Rr

A) 2:2 ratio

B) 4:1 ratio

C) 1:1 ratio

D) 3:1 ratio

14 / 50

14. A scientist identified that the color of a plants in his garde are green with gene G or yellow with gene y. He randomly selected a plant from is garden and found that the color was yellow. Which of the following is not correct

A) The genotype of the a green plant can be GG

B) the genotype of the yellow plant can be Gy or yy

C) The phenotypes of the plants is either green or yellow

D) The genotype of the yellow plant he selected at random is yy

15 / 50

15. Which of the following RNAs is not used by DNA to perform its function

A) Messenger RNA(mRNA)

B) Binding RNA(bRNA)

C) Ribosomal RNA rRNA

D) Transfer RNA(tRNA)

16 / 50

16. Which of the following is not correct

A) Different species have different diploid number of chromosomes

B) The diploid number of chromosomes is always present in the germ cells of any specie

C) The haploid number of chromosomes is half the diploid number of chromosomes

D) The somatic daugther cells always contain diploid number of chromosomes

17 / 50

17. During which stage of cell division do the pair of contrasting genes or alleles separate into different gametes

A) Meiosis

B) Zygote

C) fertilization

D) Mitosis

18 / 50

18. A scientist found that the genotype of a tall plant was TT, and another tall plant was Tt. Which of the following is not correct

A) The plant with genotype Tt is heterozygous

B) A plant with genotype TT is homozygous

C) A plant with genotype tt will be tall

D) The T gene is dorminant over t

19 / 50

19. During an experiment, the scientist crossed pure breed tall plants with genotype TT with pure breed short plant with genotype tt. All the first generation offsprings were tall plants. Which of the following is not correct

A) some of the second generation offsprings will be short

B) The tall trait is recessive

C) some of the second generation offsprings will be tall

D) The offsprings have genotype Tt

20 / 50

20. The type of division in which n number of chromosomes is formed in the daugther cells is called

A) mitosis

B) diploid division

C) meiosis

D) haploid division

21 / 50

21. A flower is red and has genotype Rr. The flower is

A) monohybrid

B) heterozygous

C) dizygous

D) homozygous

22 / 50

22. Which of the following is correct about the mendelian law of segregation

A) It says only one the pair of genes can be carried in a single gamete or sex cell

B) It says the characteristics of organisms is controlled by a pair of genes

C) it says that inheritance is a process where the characteristics of the parents are blended to produce intermediate character in the offspring

D) It implies that the genes are either expressed or not expressed

23 / 50

23. The haploid number of chromosomes is

A) 2n

B) 3n

C) 4n

D) n

24 / 50

24. which of the following is not correct

A) Diploid number of chromosomes in Honey bee is 6 and the haploid is 3

B) Diploid number of chromosome in corn is 20 and the haploid is 10

C) Diploid number of chromosome in monkey is 48 and the haploid number is 24

D) Diploid number of chromosome in Rabit is 44 and the haploid is 20

E) Diploid number of chromosome Crayfish is 196 and the haploid is 98

25 / 50

25. Which of the following is not a binding between purine base and pyrimidine base in DNA helix

A) Adenine to Ribose

B) Guanine to Cytosine

C) Cytosine to Guanine

D) Adenine to Thymine

26 / 50

26. A scientist cross red colored plant with gene(Rb) with another Red colored plant with gene (Rb). If R stands for red color and b for blue color plant. Which of the following is not correct

A) the blue colored offspring gene wll be bb

B) Some of the offsprings will be Red colored

C) some of the offsprings will be mixture of red and blue

D) some of the offsprings will be blue

27 / 50

27. The chemical particle that carries the genetic code for each individual is called

A) Chromatid

B) RNA(RiboNucleic Acid)

C) Chromosome

D) DNA(DeoxyriboNucleic Acid)

28 / 50

28. which of the following is not correct

A) the sperm cell contains n chromosomes

B) zygote contains n chromosomes

C) the parent somatic cell contains 2n chromosomes

D) the offspring of the somatic cell contains 2n chromosomes

29 / 50

29. The component of structure which directly determines inheritance is

A) Chromosome

B) Centriole

C) Nucleulus

D) Ribosome

30 / 50

30. The way and manner by which traits are transferred from parent to child is called

A) hereditary

B) nuturing

C) benefiting

D) mentoring

31 / 50

31. The genes an individual inherits from their parent is called

A) Genotype

B) Phenotype

C) Progeny

D) Allele

32 / 50

32. The basic chemical unit of DNA(Deoxy-riboNucleic Acid) is

A) Adenine

B) Phosphates

C) Nucleotides

D) Guanine

33 / 50

33. After the male sex cell(the sperm) unites with the female sex cell (the ovum) the following is formed

A) zygote

B) germinate

C) fetus

D) inflorescence

34 / 50

34. Which of the following is responsible for color of skin in Albinos

A) type of water

B) the enviroment

C) genetic inheritance

D) the cream

35 / 50

35. The light skin in an albino is an example of

A) Phenotype

B) Hybrid

C) Allele

D) Genotype

36 / 50

36. Which of the following component of the cell is involved in hereditary

A) Golgi body

B) Nucleus

C) Mitochondrium

D) Sarcoplasmic Reticulum

37 / 50

37. The two strands that form the chromosome are called

A) Centrioles

B) Genes

C) Chromatids

D) Nucleolus

38 / 50

38. When genetically dissimilar parents meet to produce an off-spring, the off-spring is called a

A) Hybrid

B) Inbreed

C) Phenotype

D) Allele

E) Progeny

39 / 50

39. Which of the following terminologies refers to the word Off-spring

A) Genotype

B) Allele

C) Recessive

D) Progeny

40 / 50

40. Which of the following is not present in DNA chain

A) Guanine

B) Thymine

C) Adenine

D) Uracil

41 / 50

41. A flower is white color and has genotype ww, So the flower is said to be

A) homozygous

B) multizygous

C) monohybrid

D) heterozygous

42 / 50

42. Which of the following is correct

A) the sex cell has diploid number of chromosomes

B) the sperm cell has 23 chromosomes

C) the somatic cell has haploid number of chromosomes

D) the ovum has 46 chromosomes

43 / 50

43. The organisms that were used in genetic experiment by Gregor Mendel were

A) Pea Plant

B) Coconut plant

C) Mango trees

D) Goats

E) Fowl

44 / 50

44. Which of the following is not a type of RNA

A) rRNA(ribosomal RNA)

B) bRNA(binding RNA)

C) mRNA (Messenger RNA)

D) tRNA(transfer RNA)

45 / 50

45. Which of the following is correct about of offspring genotype in a cross between TT and tt

A) all will be tt

B) all will be Tt

C) all will be TT

D) some will b TT and some will be tt

46 / 50

46. The elements within the chromosomes that determine the physical, mental and physiologic characteristics of an individual are called

A) Chromatids

B) traits

C) ADH

D) Genes

47 / 50

47. Which of the following is not correct

A) During reproduction the two alleles go to the same offspring

B) The pair of contrasting genes that control the characteristics of an organism are called alleles

C) The characteristics (eg color of skin and eyes) are controlled by a pair of genes

D) When a pair of genes are different, the one that manifest physical characteristics is the dominant allele

48 / 50

48. R stands for Round leave and r for wrinkled leaves . If RR parent cross Rr parent. What will be the shape of the leaves of the offsprings

A) All will be round

B) All will be wrinkled

C) Most will be round, few will be wrinkled

D) Most will be wrinkled, few will be round

49 / 50

49. A Red flower has genotype RR , which of the following is correct

A) The flower is homozygous

B) the flower is heterozygous

C) the flower is Bizygous

D) the flower is multizygous

50 / 50

50. After sexual reproduction off-springs are similar to parents in some traits due to

A) inherited traits

B) similar environment

C) diseases

D) similar nutrition

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