Identify the correct order of stages in Human evolution. a) Homo habilis b) Homo erectus c) Australopithecus d) Neanderthal man e) Dryopithecus
e → c → a → b → d
Human evolution passed through a series of ape-like and human-like forms. Fossil evidence gives the sequence from primitive apes to modern humans.
Step 1 — Dryopithecus (e), about 15 million years ago, was hairy and walked like gorillas and chimpanzees; it is the ape ancestor.
Step 2 — Australopithecus (c), about 2 million years ago in the East African grasslands, used stone weapons and ate fruit.
Step 3 — Homo habilis (a) was the first human-like being, with a brain capacity of 650–800 cc; it probably did not eat meat.
Step 4 — Homo erectus (b), about 1.5 million years ago, had a larger brain of around 900 cc and probably ate meat.
Step 5 — Neanderthal man (d), with a brain size of 1400 cc, lived in the near east and central Asia between 1,00,000 and 40,000 years ago and buried their dead.
The other sequences place Australopithecus or Neanderthal man first, or put Homo erectus or Dryopithecus at the end, all of which contradict the fossil timeline.
e → c → a → b → d option is correct.
In a practical examination, the below given pedigree chart was given as spotter for identification.
The students identified the pedigree chart as ________

According to Hugo De Vries, speciation is due to __________.
Select the statement which is ‘NOT’ true about Big Bang Theory.
Arrange the below given steps of DNA fingerprinting in sequence by selecting the appropriate option.
a) Digestion of DNA by restriction endonucleases
b) Autoradiography
c) Blotting of DNA fragments to nitrocellulose membrane
d) Isolation of DNA
e) Separation of DNA fragments by electrophoresis
In a DNA molecule, cytosine is 28%. Calculate the percentage of adenine.
Who amongst the following scientist/s had no contribution in the development of the double-helix model for the structure of DNA?
Thalassemia and Sickle cell anaemia are due to a problem in globin molecule synthesis.
Select the correct statement.
Read the following statements.
Statement I: In a typical test cross, an organism showing a dominant phenotype is crossed with the recessive parent.
Statement II: The ratio of organisms showing dominant and recessive traits in F1 generation of a test cross indicates that the organism with unknown genotype is homozygous dominant.
Choose the correct option.
The classical example of point mutation is
The genotypes of husband and wife are IAIB and IAIO. Among the blood groups of their children, how many different genotypes and phenotypes are possible?
A population of diploid organisms is at Hardy-Weinberg equilibrium. If the frequency of allele A is 0.1, the frequency of AA is ____________ .
Adaptive radiation in placental mammals and Australian Marsupials leading to similarity between distant species is an example of ___________