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.

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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. Which of the following is not correct

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

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

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

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

2 / 50

2. Which of the following is correct

A) the sperm cell has 23 chromosomes

B) the sex cell has diploid number of chromosomes

C) the ovum has 46 chromosomes

D) the somatic cell has haploid number of chromosomes

3 / 50

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

A) Singlehybrid

B) Ultimatehybrid

C) Monohybrid

D) Unihybrid

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 Crayfish is 196 and the haploid is 98

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

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

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

5 / 50

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

A) diseases

B) similar environment

C) inherited traits

D) similar nutrition

6 / 50

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

A) Allele

B) Recessive

C) Genotype

D) Progeny

7 / 50

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

A) Allele

B) Genotype

C) Hybrid

D) Phenotype

8 / 50

8. 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) Active

C) Dominant

D) Shy

E) Passive

9 / 50

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

A) mRNA (Messenger RNA)

B) tRNA(transfer RNA)

C) rRNA(ribosomal RNA)

D) bRNA(binding RNA)

10 / 50

10. 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) Most will be wrinkled, few will be round

B) All will be round

C) Most will be round, few will be wrinkled

D) All will be wrinkled

11 / 50

11. 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) the blue colored offspring gene wll be bb

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

D) some of the offsprings will be blue

12 / 50

12. The two strands that form the chromosome are called

A) Genes

B) Nucleolus

C) Centrioles

D) Chromatids

13 / 50

13. which of the following is not determined by DNA

A) The kind of enzyme an organism secretes

B) The kind of food

C) the type of Melanin pigment on the skin

D) The height of the man

14 / 50

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

A) Binding RNA(bRNA)

B) Transfer RNA(tRNA)

C) Messenger RNA(mRNA)

D) Ribosomal RNA rRNA

15 / 50

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

A) Gregor Mendel

B) Charlse Darwin

C) John Hunter

D) Alexander fleming

16 / 50

16. 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

17 / 50

17. 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 T gene is dorminant over t

B) A plant with genotype tt will be tall

C) A plant with genotype TT is homozygous

D) The plant with genotype Tt is heterozygous

18 / 50

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

A) multizygous

B) homozygous

C) monohybrid

D) heterozygous

19 / 50

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

A) Mango trees

B) Goats

C) Pea Plant

D) Fowl

E) Coconut plant

20 / 50

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

A) Inbreed

B) Allele

C) Hybrid

D) Progeny

E) Phenotype

21 / 50

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

A) Phenotypes

B) Hybrid

C) Genotypes

D) Allele

22 / 50

22. Which of the following is not present in RNA

A) Cytosine

B) Thymine

C) Uracil

D) Guanine

23 / 50

23. 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) some of the second generation offsprings will be tall

C) The tall trait is recessive

D) The offsprings have genotype Tt

24 / 50

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

A) Red cells

B) Melanin pigment

C) Sweat gland

D) white cells

25 / 50

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

A) the flower is heterozygous

B) the flower is Bizygous

C) The flower is homozygous

D) the flower is multizygous

26 / 50

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

A) 4:1 ratio

B) 1:1 ratio

C) 2:2 ratio

D) 3:1 ratio

27 / 50

27. 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 implies that the genes are either expressed or not expressed

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 says the characteristics of organisms is controlled by a pair of genes

28 / 50

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

A) Adenine to Ribose

B) Adenine to Thymine

C) Guanine to Cytosine

D) Cytosine to Guanine

29 / 50

29. which of the following is not correct

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

B) the parent somatic cell contains 2n chromosomes

C) the sperm cell contains n chromosomes

D) zygote contains n chromosomes

30 / 50

30. 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 somatic daugther cells always contain diploid number of chromosomes

C) Different species have different diploid number of chromosomes

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

31 / 50

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

A) Progeny

B) Allele

C) Genotype

D) Phenotype

32 / 50

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

A) Thymine

B) Uracil

C) Guanine

D) Adenine

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) fetus

C) inflorescence

D) germinate

34 / 50

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

A) nuturing

B) benefiting

C) mentoring

D) hereditary

35 / 50

35. the diploid number of chromosomes is

A) 3n

B) 4n

C) n

D) 2n

36 / 50

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

A) Meiosis

B) fertilization

C) Zygote

D) Mitosis

37 / 50

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

A) language

B) color of hair

C) behavior

D) color of eyes

38 / 50

38. 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

39 / 50

39. The component of structure which directly determines inheritance is

A) Centriole

B) Chromosome

C) Nucleulus

D) Ribosome

40 / 50

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

A) RNA(RiboNucleic Acid)

B) DNA(DeoxyriboNucleic Acid)

C) Chromosome

D) Chromatid

41 / 50

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

A) Mitochondrium

B) Golgi body

C) Sarcoplasmic Reticulum

D) Nucleus

42 / 50

42. The physical manifestation of the genetic inheritance is called

A) Phenotype

B) Allele

C) Genotype

D) Hybrid

43 / 50

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

A) Recessive

B) Monhybrid

C) Dominant

D) Phenotype

44 / 50

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

A) Nucleotides

B) Guanine

C) Phosphates

D) Adenine

45 / 50

45. 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

46 / 50

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

A) the enviroment

B) type of water

C) the cream

D) genetic inheritance

47 / 50

47. The haploid number of chromosomes is

A) n

B) 2n

C) 3n

D) 4n

48 / 50

48. 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

49 / 50

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

A) mitosis

B) diploid division

C) haploid division

D) meiosis

50 / 50

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

A) heterozygous

B) monohybrid

C) dizygous

D) homozygous

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