ancestral

Examples of ancestral in the following topics:

• Death

  • These poles are then placed next to graves to to serve as symbols of death and the ancestral world.
  • Dama memorial ceremonies, consisting of the performance of up to 400 masqueraders, are held to accompany the dead into the ancestral realm and restore order to the universe.
  • Bieri are boxes used by the Fang people to hold the remains of ancestors, and are carved with protective figures; the Bekota use baskets to hold ancestral remains.

• Sympatric Speciation

  • Sympatric speciation occurs when two individual populations diverge from an ancestral species without being separated geographically.
  • These individuals would immediately be able to reproduce only with those of this new kind and not those of the ancestral species.

• Race and Genetics

  • Ongoing genetic research has investigated how ancestral human populations migrated in the ancestral geographic environment into different geographic areas.

• Size Variation and ORF Contents in Genomes

  • However, in free-living bacteria, such gene loss cannot explain the observed disparities in genome size because ancestral genomes would have had to contain improbably large numbers of genes.
  • The high numbers of ORFans in bacterial genomes indicate that, with the exception of those species with highly reduced genomes, much of the observed diversity in gene inventories does not result from either the loss of ancestral genes or the transfer from well-characterized organisms (processes that result in a patchy distribution of orthologs but not in unique genes) or from recent duplications (which would likely yield homologs within the same or closely related genome).

• Early Human Evolution

  • Hominins, who were bipedal in comparison to the other hominoids who were primarily quadrupedal, includes those groups that probably gave rise to our species: Australopithecus africanus, Homo habilis, and Homo erectus, along with non-ancestral groups such as Australopithecus boisei.
  • It is possible that there were often more than one species alive at any one time and that many of the fossils found (and species named) represent hominin species that died out and are not ancestral to modern humans.

• The Cell Wall of Bacteria

  • These ancestral cells reproduce by means of binary fission, duplicating their genetic material and then essentially splitting to form two daughter cells identical to the parent.

• Early Hominins

  • The hominin Australopithecus evolved 4 million years ago and is believed to be in the ancestral line of the genus Homo.
  • These hominids became extinct more than 1 million years ago and are not thought to be ancestral to modern humans, but rather members of an evolutionary branch on the hominin tree that left no descendants.

• Marcus Garvey

  • Marcus Garvey, a prominent Jamaican, led a Back-to-Africa movement that promoted the return of the African diaspora to their ancestral lands.
  • He founded the Universal Negro Improvement Association and African Communities League (UNIA-ACL), as well as the Black Star Line, part of the Back-to-Africa movement that promoted the return of the African diaspora to their ancestral lands.

• Gene Duplications and Divergence

  • If an ancestral gene is pleiotropic and performs two functions, often times neither one of these two functions can be changed without affecting the other function.
  • In this way, partitioning the ancestral functions into two separate genes can allow for adaptive specialization of subfunctions, thereby providing an adaptive benefit.
  • Genetic divergence is the process in which two or more populations of an ancestral species accumulate independent genetic changes through time, often after the populations have become reproductively isolated for some period of time.

• Speciation

  • Biologists think of speciation events as the splitting of one ancestral species into two descendant species.