The correct option is(A): chimpanzee.
Humans and chimpanzees are both part of the family Hominidae, which includes great apes. This family is also known as the "hominids." The family Hominidae includes several species, including humans (Homo sapiens), chimpanzees (Pan troglodytes), gorillas (Gorilla gorilla), orangutans (Pongo spp.), and gibbons (Hylobatidae).
However, when considering genetic and evolutionary relationships, chimpanzees are the closest living relatives to humans.
The given graph shows the range of variation among population members, for a trait determined by multiple genes. If this population is subjected to disruptive selection for several generations, which of the following distributions is most likely to result?
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): A typical unfertilized, angiosperm embryo sac at maturity is 8-nucleate and 7-celled.
Reason (R): The egg apparatus has 2 polar nuclei.
In the light of the above statements, choose the correct answer from the options given below:
A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is :
Evolution is a process that occurs in changes in the genetic content of a population over time. Evolutionary change is generally classified into two: microevolution and macroevolution. The process of changes in allele frequencies in a population over time is a microevolutionary process. Three main mechanisms that cause allele frequency change are natural selection, genetic drift, and gene flow. On the other hand, macroevolution refers to change at or above the level of the species.