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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Genetics 1

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

1 / 50

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

A) Allele

B) Genotype

C) Hybrid

D) Phenotype

2 / 50

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

A) fertilization

B) Mitosis

C) Zygote

D) Meiosis

3 / 50

3. The physical manifestation of the genetic inheritance is called

A) Allele

B) Phenotype

C) Hybrid

D) Genotype

4 / 50

4. which of the following is not correct

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

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

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

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

5 / 50

5. Which of the following is not correct

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

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

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

D) Different species have different diploid number of chromosomes

6 / 50

6. which of the following is not correct

A) the parent somatic cell contains 2n chromosomes

B) the sperm cell contains n chromosomes

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

D) zygote contains n chromosomes

7 / 50

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

A) similar environment

B) similar nutrition

C) inherited traits

D) diseases

8 / 50

8. 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 round and few will be wrinkled

B) Most will be wrinkled and few will be round

C) All will be wrinkled

D) Half will be round and half will be wrinkled

9 / 50

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

A) Mitochondrium

B) Golgi body

C) Sarcoplasmic Reticulum

D) Nucleus

10 / 50

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

A) Chromatid

B) RNA(RiboNucleic Acid)

C) DNA(DeoxyriboNucleic Acid)

D) Chromosome

11 / 50

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

A) all will be Tt

B) some will b TT and some will be tt

C) all will be TT

D) all will be tt

12 / 50

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

A) Progeny

B) Allele

C) Phenotype

D) Genotype

13 / 50

13. the diploid number of chromosomes is

A) 4n

B) 3n

C) 2n

D) n

14 / 50

14. The haploid number of chromosomes is

A) 2n

B) 3n

C) n

D) 4n

15 / 50

15. Which of the following is not correct

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

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

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

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

16 / 50

16. which of the following is not determined by DNA

A) The kind of enzyme an organism secretes

B) The kind of food

C) The height of the man

D) the type of Melanin pigment on the skin

17 / 50

17. 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 wrinkled

B) All will be round

C) Most will be wrinkled, few will be round

D) Most will be round, few will be wrinkled

18 / 50

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

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

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

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

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

19 / 50

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

A) John Hunter

B) Alexander fleming

C) Charlse Darwin

D) Gregor Mendel

20 / 50

20. Which of the following is not present in RNA

A) Uracil

B) Thymine

C) Cytosine

D) Guanine

21 / 50

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

A) Fowl

B) Pea Plant

C) Mango trees

D) Goats

E) Coconut plant

22 / 50

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

A) Phenotype

B) Progeny

C) Hybrid

D) Allele

E) Inbreed

23 / 50

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

A) Monohybrid

B) Unihybrid

C) Singlehybrid

D) Ultimatehybrid

24 / 50

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

A) Recessive

B) Dominant

C) Phenotype

D) Monhybrid

25 / 50

25. 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) Some of the offsprings will be Red colored

B) some of the offsprings will be blue

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

D) the blue colored offspring gene wll be bb

26 / 50

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

A) Nucleotides

B) Guanine

C) Adenine

D) Phosphates

27 / 50

27. The two strands that form the chromosome are called

A) Nucleolus

B) Centrioles

C) Chromatids

D) Genes

28 / 50

28. Which of the following is correct

A) the sperm cell has 23 chromosomes

B) the somatic cell has haploid number of chromosomes

C) the ovum has 46 chromosomes

D) the sex cell has diploid number of chromosomes

29 / 50

29. The component of structure which directly determines inheritance is

A) Nucleulus

B) Chromosome

C) Centriole

D) Ribosome

30 / 50

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

A) color of hair

B) behavior

C) color of eyes

D) language

31 / 50

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

A) Genotypes

B) Phenotypes

C) Allele

D) Hybrid

32 / 50

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

A) the cream

B) genetic inheritance

C) type of water

D) the enviroment

33 / 50

33. 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) The tall trait is recessive

B) some of the second generation offsprings will be tall

C) The offsprings have genotype Tt

D) some of the second generation offsprings will be short

34 / 50

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

A) monohybrid

B) heterozygous

C) multizygous

D) homozygous

35 / 50

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

A) monohybrid

B) dizygous

C) heterozygous

D) homozygous

36 / 50

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

A) 4:1 ratio

B) 3:1 ratio

C) 1:1 ratio

D) 2:2 ratio

37 / 50

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

A) the flower is multizygous

B) the flower is heterozygous

C) The flower is homozygous

D) the flower is Bizygous

38 / 50

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

A) zygote

B) inflorescence

C) fetus

D) germinate

39 / 50

39. 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) The T gene is dorminant over t

D) A plant with genotype tt will be tall

40 / 50

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

A) Chromatids

B) ADH

C) traits

D) Genes

41 / 50

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

A) diploid division

B) haploid division

C) mitosis

D) meiosis

42 / 50

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

A) Thymine

B) Uracil

C) Guanine

D) Adenine

43 / 50

43. 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) Dominant

B) Recessive

C) Shy

D) Passive

E) Active

44 / 50

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

A) Binding RNA(bRNA)

B) Transfer RNA(tRNA)

C) Ribosomal RNA rRNA

D) Messenger RNA(mRNA)

45 / 50

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

A) Red cells

B) Sweat gland

C) white cells

D) Melanin pigment

46 / 50

46. 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 phenotypes of the plants is either green or yellow

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

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

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

47 / 50

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

A) benefiting

B) mentoring

C) nuturing

D) hereditary

48 / 50

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

A) Adenine to Thymine

B) Cytosine to Guanine

C) Guanine to Cytosine

D) Adenine to Ribose

49 / 50

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

A) Progeny

B) Genotype

C) Allele

D) Recessive

50 / 50

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

A) bRNA(binding RNA)

B) rRNA(ribosomal RNA)

C) mRNA (Messenger RNA)

D) tRNA(transfer RNA)

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