hybrid zone

(noun)

an area where the ranges of two interbreeding species meet and interbreed

Related Terms

Examples of hybrid zone in the following topics:

  • Hybrid Zones

    • An area where two closely-related species continue to interact and reproduce, forming hybrids, is called a hybrid zone.
    • Over time, the hybrid zone may change depending on the fitness strength and the reproductive barriers of the hybrids .
    • For a hybrid zone to be stable, the offspring produced by the hybrids have to be less fit than members of the parent species.
    • After speciation has occurred, the two separate-but-closely-related species may continue to produce offspring in an area called the hybrid zone.
    • Discuss how the fitness of a hybrid will lead to changes in the hybrid zone over time

  • Five-Part Rondo

    • Hybrid themes generally combine the features of sentences and periods.
    • On the large scale, the antecedent phrase functions like a big presentation function zone (like the presentation phrase does).
    • Hybrid 2 similarly begins with an antecedent phrase, but follows with a four-bar-long cadential progression.
    • Hybrid 3 is almost identical to Hybrid 1, with the exception that the first phrase does not end with a cadence.
    • Hybrid 4 is almost identical to a period, with the exception that the first phrase does not end with a cadence.

  • sp2 Hybridization

    • In order to explain the bonding, the 2s orbital and two of the 2p orbitals (called sp2 hybrids) hybridize; one empty p-orbital remains.
    • sp2 Hybridization in Ethene and the Formation of a Double Bond
    • In this case, carbon will sp2 hybridize; in sp2 hybridization, the 2s orbital mixes with only two of the three available 2p orbitals, forming a total of three sp hybrid orbitals with one p-orbital remaining.
    • The carbon atoms are sp2 hybridized.
    • Recognize the role of sp2 hybridized atoms in sigma and pi bonding.

  • Types of Root Systems and Zones of Growth

    • The root tip has three main zones: a zone of cell division, a zone of elongation, and a zone of maturation.
    • The root tip can be divided into three zones: a zone of cell division, a zone of elongation, and a zone of maturation .
    • All three zones are in approximately the first centimeter of the root tip.
    • A longitudinal view of the root reveals the zones of cell division, elongation, and maturation.
    • Describe the three zones of the root tip and summarize the role of each zone in root growth

  • sp3 Hybridization

    • sp3 hybrid orbitals form when a single s and three p orbitals hybridize.
    • In hybridization, carbon's 2s and three 2p orbitals combine into four identical orbitals, now called sp3 hybrids.
    • For example, in the ammonia molecule, the fourth of the sp3 hybrid orbitals on the nitrogen contains the two remaining outer-shell electrons, which form a non-bonding lone pair.
    • Ethane can form by replacing one of the hydrogen atoms in CH4 with another sp3 hybridized carbon fragment.
    • Explain the process of hybridization as it applies to the formation of sp3 hybridized atoms.

  • Hybridization in Molecules Containing Double and Triple Bonds

    • In chemistry, hybridization is the concept of mixing atomic orbitals to form new hybrid orbitals suitable for describing bonding properties.
    • The hybrids are named for the atomic orbitals involved in the hybridization.
    • For this molecule, carbon will sp2 hybridize.
    • In this case, sp hybridization leads to two double bonds.
    • Describe the role of hybridization in the formation of double and triple bonds.

  • Growth of Bone

    • The zone of maturation and hypertrophy contains chondrocytes that are older and larger than those in the proliferative zone .
    • The zone of calcified matrix, the zone closest to the diaphysis, contains chondrocytes that are dead because the matrix around them has calcified .
    • After the zone of calcified matrix, there is the zone of ossification, which is actually part of the metaphysis .
    • The topmost layer of the epiphysis is the reserve zone.
    • The second zone, the proliferative zone, is where chondrocytes are continually undergoing mitosis.

  • Pitch-Class Sets

    • It often occurs in a sentence or a hybrid theme type as the continuation phrase.
    • Non-modulating Prinners that operate as continuation phrases often contain this move in order to end the sentence or hybrid theme satisfactorily.
    • These modulating Prinners are used in sentence or hybrid themes either to modulate to the dominant key or to effect a strong half cadence.
    • They also commonly appear at the beginning of the Transition (TR) zone in a sonata movement, effecting the same move to the dominant.

  • Meristems

    • Apical meristems are organized into four zones: (1) the central zone, (2) the peripheral zone, (3) the medullary meristem and (3) the medullary tissue .
    • Surrounding the central zone is the peripheral zone.
    • The rate of cell division in the peripheral zone is higher than that of the central zone.
    • Each zone of the apical meristem has a particular function.
    • Pictured here are the (1) central zone, (2) peripheral zone, (3) medullary meristem and (3) medullary tissue.

  • Marine Biomes

    • Each zone has a distinct group of species adapted to the biotic and abiotic conditions particular to that zone.
    • This zone is an extremely variable environment because of tides.
    • The neritic zone extends from the intertidal zone to depths of about 200 m (or 650 ft) at the edge of the continental shelf.
    • Beyond the neritic zone is the open ocean area known as the oceanic zone.
    • There are a variety of invertebrates and fishes found in this zone, but the abyssal zone does not have plants due to the lack of light.