MIUN Free NEET Quiz Unit 7

1. Morgan found a way to map the genes on the chromosomes.

2. In eukaryotes, operon generally shows specificity.

3. Kangaroo is a placental mammal.

4. All recessive has homozygous allele, but all homozygous alleles are not recessive.

5. Turner’s syndrome – Flat back of head.

6. Both the DNA strands are having the same sequence.

7. Transcription necessitates defining the boundaries that would demarcate the region of DNA that would be transcribed.

8. Mendel investigated characters in the garden pea plant that were manifested as two opposing traits, e.g., tall or dwarf plants, yellow or green seeds.

9. Tasmanian wolf is a marsupial mammal.

10. Once set in, the total DNA of an organism gets duplicated or replicated, whereas in transcription only a segment of DNA and only one of the strands is copied into RNA.

11. Phenylketonuria patients lack an enzyme that converts the amino acid phenylalanine into tyrosine.

12. In eukaryotes, each operon has its specific operator and specific repressor.

13. Fossils discovered in Java in 1891 revealed Homo erectus lived about 1.5 mya, had a cranial capacity of 650cc, probably ate meat.

14. The diversity of life forms on Earth has not changed over millions of years.

15. Klinefelter’s syndrome – Flat back of head.

16. Among the narratives of species evolution, the story of modern human evolution is uninteresting and does not parallel the evolution of the human brain and language.

17. During the mid-nineteenth century that headway was made in the understanding of inheritance.

18. A DNA segment that codes for RNA can be referred to, in simplistic terms, as a gene.

19. Both the DNA strands are copied during transcription.

20. The Big Bang Theory talks of a singular huge explosion unimaginable in physical terms.

21. Flying phalanger is a marsupial mammal.

22. Biochemical similarities are pointing to the different shared ancestry as structural similarities among diverse organisms.

23. Based on dihybrid cross observations, Mendel proposed that something was being stably passed down, unchanged, from parent to offspring through the gametes, over successive generations.

24. Genes showing similarity, present in related organisms but serving different roles, provide an example of convergent evolution.

25. Sugar glider is a placental mammal.

26. First human-like being, the hominid, was called Homo erectus.

27. Characters segregate during the formation of gametes (Law of Segregation).

28. Based on dihybrid cross observations, Mendel proposed that something was being unstably passed down, unchanged, from parent to offspring through the gametes, over successive generations.

29. Dominant wild type alleles are usually represented with (+) sign in superscript.

30. The process of copying genetic information from one strand of the DNA into other strand of DNA is termed as transformation.

31. Evidence shows Australopithecines lived 3 mya, in East African grasslands, hunted with stone weapons but essentially ate meat.

32. A pure-line is one that, having undergone continuous cross-pollination, shows the unstable trait inheritance and expression for several generations. 

33. Some genes were called as ‘linked genes’ as they are closely packed.

34. Gregor Mendel conducted hybridisation experiments on garden peas for eleven years (1852-1863) and proposed the laws of variation in living organisms.

35. The operator region is adjacent to the promoter elements in most operons.

36. Phenylketonuria is inborn error of metabolism is also inherited as the sex linked dominant trait.

37. Accumulation of phenylalanine derivatives in brain results in mental retardation.

38. Closely located genes assorted together, and distantly located genes because of recombination, assorted independently.

39. Turner’s syndrome – short stature and underdeveloped feminine character

40. Diagonal Line outside and above a symbol in a pedigree tree represents a deceased individual.

41. The genetic code is then read by tRNA, which acts as an adapter molecule.

42. Similarities in proteins and genes performing a given function among diverse organisms give clues to common ancestry.

43. In male honey bee, n = 16 and sperms are produced by mitosis.

44. In pea plants the pair of alleles for stem height would be TT, Tt or tt.

45. Early human (8000 – 1000 B.C.) do not know about scientific basis of inheritance.

46. Mango seed forms only a mango plant and not any other plant.

47. Humans knew from as early as 8000-1000 B.C. that one of the causes of variation was hidden in sexual reproduction.

48. Mendel used the term ‘traits,’ now we call them as alleles.

49. Different combinations of gametes are theoretically represented in a square tabular form known as ‘Punnett Square.’

50. Flying squirrel is dissimilar to Flying phalanger.