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Meiosis I

Meiosis I

Meiosis is a carefully orchestrated set of cell divisions, the goal of which—in humans—is to produce haploid sperm or eggs, each containing half the number of chromosomes present in somatic cells elsewhere in the body. Meiosis I is the first such division, and involves several key steps, among them: condensation of replicated chromosomes in diploid cells; the pairing of homologous chromosomes and their exchange of information; and finally, the separation of homologous chromosomes by a...

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Many human characteristics, like height, are shaped by both nature—in other words, by our genes—and by nurture, or our environment. For example, chronic stress during childhood inhibits the production of growth hormones and consequently reduces bone growth and height. Scientists estimate that 70-90% of variation in height is due to genetic differences among individuals, and 10-30% of variation in height is due to differences in the environments that individuals experience, such as differences...

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Stem cells are undifferentiated cells that divide and produce more stem cells or progenitor cells that differentiate into mature, specialized cell types. All the cells in the body are generated from stem cells in the early embryo, but small populations of stem cells are also present in many adult tissues including the bone marrow, brain, skin, and gut. These adult stem cells typically produce the various cell types found in that tissue—to replace cells that are damaged or to continuously renew...

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Meiosis I

Meiosis I

Meiosis is the division of a diploid cell into haploid cells forming sperm and eggs in animals through differentiation. Meiosis I is the first stage of meiosis, where the genetic recombination of homologous chromosomes and the reduction of the ploidy level by half occurs.
Prophase I is the most extended and complex step of meiosis I characterized by synapsis, chromosome pairing, and recombination of the homologous chromosomes. This process is facilitated by a proteinaceous structure called the...

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Dissection and Downstream Analysis of Zebra Finch Embryos at Early Stages of Development

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Scientific Papers by Developmental Biologists in Japan.

Hideyo Ohuchi¹, Tsutomu Nohno^2,3

¹Department of Cytology and Histology, Okayama University Faculty of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan.

Journal of Developmental Biology

|March 28, 2023

Summary

Developmental biologists in Japan have compiled ten manuscripts. These studies explore key areas of developmental biology research.

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Area of Science:

Developmental Biology
Molecular Biology
Genetics

Background:

This collection features research from leading developmental biologists in Japan.
The manuscripts cover a range of topics within the field.

Discussion:

The compilation highlights recent advancements and diverse research directions.
It offers insights into the current state of developmental biology in Japan.

Key Insights:

The studies collectively represent significant progress in understanding developmental processes.
Key findings span various aspects of organism development.

Outlook:

This volume provides a valuable resource for researchers in developmental biology.
Future research directions are implicitly suggested by the presented work.