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Lise Meitner - Wikipedia

en.wikipedia.org/wiki/Lise_Meitner

Lise Meitner was an Austrian-Swedish physicist who worked on radioactivity and nuclear ... Meitner and Otto Frisch understood that the fission process, which splits the atomic ... While at the Unive...

Splitting the Uranium Atom – Nuclear Fission Speaker's Notes for ...

www.ccnr.org/Baker_Lake_summary.pdf

This process is callednuclear fission”, since the centre of an atom is called its ... damage to unborn babies, and damage to the sperm and eggs of men and women. .... In 1982, an independent scientific study concluded that levels of radon ...

Neuroscience For Kids - The Brain: Right Down the Middle

faculty.washington.edu/chudler/heshe.html

Differences between the brains of men and women have generated ... Almost all studies show that at birth, a boy's brain is bigger than a girl's brain. ... The major pathway that connects the right and left cerebral hemispheres is called the ... is the fiber tract made up of 200-250 million axons that is cut in split brain patien...

Gametes: Definition, Formation & Fusion - Video ... - Study.com

study.com/academy/lesson/gametes-definition-formation-fusion.html

Jun 18, 2015 ... Both the male and female gametes are formed during a process of ... So, during meiosis DNA or chromosomes are copied, then split into two cells ... The two haploid cells will fuse together to form a diploid cell called a zygote.

Chapter 4: Cellular Reproduction: Multiplication by Division: Inside ...

publications.nigms.nih.gov/insidethecell/chapter4.html

Apr 22, 2011 ... The rest of the time-phases G1 through G2—is known as interphase. ... The first five phases do the job of splitting the nucleus and its .... of the lack of a suitable animal model in which to study the disorder. ... Because men and women can be in either line, the dancers can line up in millions of different ways.

meiosis | Learn Science at Scitable - Nature

www.nature.com/scitable/definition/meiosis-88

Meiosis begins following one round of DNA replication in cells in the male or female sex organs. The process is split into meiosis I and meiosis II, and both meiotic divisions have multiple ... During telophase I, the chromosomes are enclosed in nuclei. The cell now undergoes a process called cytokinesis that divides the ...

Genetics Overview - Science Behind the Genographic Project ...

genographic.nationalgeographic.com/genetics-overview/

The complete set of some 20,000 to 25,000 genes is called the genome. ... If unwound, the microscopic DNA strands in one cell's nucleus would stretch to over ... This recombination process makes it difficult to study lines of descent because it ... that determines gender—men have a mismatched pair (Y and X), while women ...

What is meiosis? | Facts | yourgenome.org

www.yourgenome.org/facts/what-is-meiosis

May 6, 2016 ... These cells are our sex cells – sperm in males, eggs in females. ... The pairs of chromosomes may then exchange bits of DNA in a process called ... The membrane around the nucleus in each daughter cell dissolves away ...

Sexual Reproduction in Gymnosperms - Boundless

www.boundless.com/biology/textbooks/boundless-biology-textbook/plant-reproduction-32/plant-reproductive-development-and-structure-189/sexual-reproduction-in-gymnosperms-720-11946/

Gymnosperms produce both male and female gametophytes on separate ... The female gametophyte is contained within a structure called the archegonium. ... The male gametophyte containing the generative cell splits into two sperm nuclei,  ...

6 Women Scientists Who Were Snubbed Due to Sexism

news.nationalgeographic.com/news/2013/13/130519-women-scientists-overlooked-dna-history-science/

May 19, 2013 ... Like many women scientists, Franklin was robbed of recognition ... She was not the first woman to have endured indignities in the male-dominated world ... petri dish to another, called replica plating, which enabled the study of ... to the discovery of nuclear fission—the fact that atomic nuclei can split in two.