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All Journal Jurnal Ilmiah Dan Karya Mahasiswa Pentagon: Jurnal Matematika dan Ilmu Pengetahuan Alam
Nafasya Rahmandini
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Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Environmental Science Languange, Linguistic, Communication & Media Mathematics

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Analisis Perbandingan Gametogenesis pada Hewan Vertebrata dan Invertebrata Nafasya Rahmandini; Na’illah Ega Sivana
Jurnal Ilmiah Dan Karya Mahasiswa Vol. 3 No. 1 (2025): JURNAL ILMIAH DAN KARYA MAHASISWA (JIKMA)
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54066/jikma.v3i1.2864

Abstract

In mammals, the reproductive process involves fertilization between male and female gametes that produce embryos. Gametogenesis, which includes spermatogenesis and oogenesis, is the stage of formation and maturation of gamete cells through mitosis and meiosis division. The purpose of this study is to understand the differences and similarities in the process of gametogenesis in vertebrate and invertebrate animal groups. This study uses a literature study method in obtaining its data. Although there are variations in structure and mechanism, the process of gametogenesis in vertebrates and invertebrates has similar basic principles. Environmental factors such as temperature also play an important role in influencing spermatogenic activity and reproductive behavior in both groups of animals. The similarities in the basic process indicate that gametogenesis is an evolutionarily conservative mechanism, while specific variations reflect adaptation to the reproductive needs of each species.
Kajian Literatur Evolusi Kuda: Perubahan Kaki Dan Perubahan Gigi Kuda Berdasarkan Penemuan Fosil Nafasya Rahmandini; Nashwa Intana Putri; Virna Fianarita Rahmawati
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 2 No. 4 (2024): Desember: Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v2i4.364

Abstract

Evolution is characterized by changes over time with one or more inherited traits that we often find in populations of organisms. Fossils themselves can be said to be traces/remains/marks of a life of an organism (animal/plant) that can be directly or indirectly preserved with the earth's crust, naturally occurring and usually solid/hard with a geological age of more than 11,000 years. Horse evolution is one of the interesting adaptations, with morphological changes related to environmental changes. The purpose of this study was to determine the evolution of horses from the fossils found and, to find out how to adapt and the changes that occur from the environment and factors of natural selection. The method used in this study is a literature review from several reference sources. Horse evolution shows how species can adapt to the environment through significant morphological changes, such as a reduction in the number of fingers and an increase in body size. and the role of natural selection in forming physical characteristics that support survival.
Co-Authors Nashwa Intana Putri Na’illah Ega Sivana Virna Fianarita Rahmawati