NEET UG 2019 — Evolution

A gene locus has two alleles A, a. If the frequency of dominant allele A is 0.4, then what will be the frequency of homozygous dominant, heterozygous and homozygous recessive individuals in the Population?

In a species, the weight of the newborn ranges from 2 to 5 kg. 97% of the newborn with an average weight between 3 and 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 to 5 kg die. Which type of selection process is taking place?

In Australia, marsupials and placental mammals have evolved to share many similar characteristics. This type of evolution may be referred to as

Match the hominids with their correct brain size: <table class="pyq-table"><tbody><tr><th></th><th>Column - I</th><th></th><th>Column - II</th></tr><tr><td>$(a)$</td><td>Homo habilis</td><td>$(i)$</td><td>900 cc</td></tr><tr><td>$(b)$</td><td>Homo neanderthalensis</td><td>$(ii)$</td><td>1350 cc</td></tr><tr><td>$(c)$</td><td>Homo erectus</td><td>$(iii)$</td><td>650-800 cc</td></tr><tr><td>$(d)$</td><td>Homo sapiens</td><td>$(iv)$</td><td>1400 cc</td></tr></tbody></table> Select the correct option.

Variations caused by mutation, as proposed by Hugo de Vries, are:

Which of the following statements is correct about the origin and evolution of men?