The Y chromosome can disappear over time in human males, which may introduce a number of health problems. While the exact trigger for such degeneration is unknown, environmental factors can play a ...

The chromosomes were analyzed during mitosis and diakinesis, and the tetrad normality and pollen viability were also assessed. In addition, stomata and pollen were measured and some plant features ...

Chromosomes are tightly coiled structures in each of your cells that contain DNA, the code for all life. DNA is organized in segments on chromosomes called genes. Humans typically have 46 ...

highlighting the structural flexibility of the G-tetrad. This floppiness has significant implications, as it results in 2ⁿ possible isomers for an n-stacked G-quadruplex, potentially contributing to ...

Increased risk for autism appears to be linked to the Y chromosome, a Geisinger Health System study has found, offering a new explanation for the greater prevalence of autism in males. The results ...

Typically, females have two X chromosomes while males have an X and a Y. In birds and butterflies, males have two Z chromosomes, while females have one Z and one W chromosome. “It is mind ...

Polytene chromosomes are structures found in highly specialized tissues ... studies demonstrating the intense metabolic activity in its cells at the end of the tetrad stage and during exine formation ...

These great ape chromosome sequences also resolve the sequences of another type of repeat called a DNA satellite, which is a large stretch of repeating sequence. Among the great ape chromosomes ...

The oldest-known sex chromosome emerged in octopus and squid between 455 million and 248 million years ago — 180 million years earlier than the previous record-holder, scientists have discovered.

The Reserve Bank of Zimbabwe (RBZ) has cancelled Tetrad Investment Bank’s operating licence at the institution’s behest as it ventures into management and development of property after failing ...

The first attempt to determine the building blocks of our genetic code took place 20 years ago, but there were still significant gaps left in the sequences of all 23 pairs of human chromosomes.

The human Y chromosome, the determinant of male sex, has finally been completely sequenced. What it unveils could prove crucial to understanding the Y chromosome's puzzling origins, and ...