Category: Development

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11 June 2013 | ScienceNOW

ScienceShot: Goldilocks Inside an Egg

by Lizzie Wade

Turtle embryos seek out regions that are neither too hot nor too cold

27 February 2013 | ScienceNOW

'Franken-Tadpoles' See With Eyes on Their Backs

by Michael Price

Technique holds promise for restoring sight in human patients

11 December 2012 | ScienceNOW

Homosexuality May Start in the Womb

by Elizabeth Norton

DNA modifications may explain how sexual orientation is passed down through generations

29 November 2012 | ScienceNOW

Crocs' Chaotic, Cracked Cranial Covering

by Sarah C. P. Williams

The "scales" on a crocodile's head aren't scales at all

5 November 2008 | ScienceNOW

A Chilly Reception

by Wayne Kondro

Expert panel gives the cold shoulder to Canada's plans for Arctic research

28 October 2008 | ScienceNOW

Safe Passage for Salmon?

by Robert F. Service

New research suggests ocean-bound salmon have little trouble getting past dams.

30 November 2007 | ScienceNOW

A Sweet Recipe for Baby Boys

by Elizabeth Quill

High blood sugar levels skew sex ratios in mice

25 May 2007 | ScienceNOW

See Those Fingers? Do the Math

by Constance Holden

Boys with longer ring fingers are better at math

22 February 2007 | ScienceNOW

Bright Nights Dim Survival Chances

by Phil Berardelli

Even small amounts of artificial light can disrupt the natural cycles of wildlife

13 September 2006 | ScienceNOW

The Ghost of Viruses Past

by Rhitu Chatterjee

A gene left behind from a viral infection is essential for sheep development

24 May 2006 | ScienceNOW

Mendel's Laws: Foiled Again

by Michael Balter

Mice can pass down genetic information via RNA, violating classical genetics

8 May 2006 | ScienceNOW

Timing Is Everything in Brain Development

by Katherine Unger

Neural progenitor cells make sure the cart comes after the horse

17 April 2006 | ScienceNOW

How Bats Got Off the Ground

by Michael Balter

Ramping up of bone growth gene may have made flight possible

6 February 2006 | ScienceNOW

Sex Cell Switch

by Katherine Unger

Primitive sperm cells gave rise to eggs when placed inside female fish

26 July 2005 | ScienceNOW

New Eggs From Bone Marrow?

by Gretchen Vogel and Jennifer Couzin

Controversial study could provide hope for infertile women

2 June 2005 | ScienceNOW

Pesticides May Stunt Fertility of Offspring

by Jocelyn Kaiser

Generations of exposed rats have lower sperm count and motility

23 March 2005 | ScienceNOW

Flies Have Crystal Vision

by Adrian Cho

The intricate patterns of a fly's eye form simply, much like a crystal

29 November 2004 | ScienceNOW

Don't Trust the Help

by Jean Marx

Stem cells recruited to repair the stomach lining may cause gastric cancer

4 October 2004 | ScienceNOW

Smelling Like Sperm

by David Grimm

Receptor sperm use to locate egg also functions in nose

27 September 2004 | ScienceNOW

Stem Cells Pick Up the Beat

by Constance Holden

Embryonic stem cells fix damaged hearts in pigs

20 September 2004 | ScienceNOW

Mouse Pregnancy Goes Down the Tubes

by John Bohannon

Overabundance of body chemical similar to marijuana's THC may interfere with fetus development

3 September 2004 | ScienceNOW

Fur-Replacement Therapy

by Constance Holden

Stem cells from hair follicles regenerate skin and hair in mice

2 September 2004 | ScienceNOW

Pecking Away at Beak Evolution

by Elizabeth Pennisi

Bonemaking protein tied to beak diversity in Darwin's finches

30 August 2004 | ScienceNOW

Building a Sex-Specific Brain

by Phillips Melissa

Differences in male and female brains tied to self-destructing neurons

23 August 2004 | ScienceNOW

Hopes Renewed for Pancreatic Stem Cells

by Mary Beckman

Rare cells can give rise to insulin-producing β cells in mice

11 August 2004 | ScienceNOW

Britain OKs Human Cloning Study

by Gretchen Vogel

University of Newcastle team will attempt to create stem cell lines from cloned embryos

14 July 2004 | ScienceNOW

Resveratrol to the Rescue

by Mitch Leslie

Compound that boosts yeast longevity also benefits worms and flies

29 June 2004 | ScienceNOW

Performance-Enhancing Drug for Sperm

by John Bohannon

Khat leaves speed sperm maturation and give them extra swimming power

17 June 2004 | ScienceNOW

How Going Hungry Might Save Cells

by Jennifer Couzin-Frankel

Gene may fight cell death in calorie-restricted animals

3 June 2004 | ScienceNOW

Live Lean, Live Long

by Esther Landhuis

By squelching a fat-storage pathway, protein might extend life

26 May 2004 | ScienceNOW

Mitochondrial Miscues Tied to Aging

by Esther Landhuis

Proofreading errors in mitochondrial DNA make mice old before their time

24 May 2004 | ScienceNOW

Aspirin Kills More Than Pain for Male Rats

by Mary Beckman

Reduced sex drive reveals surprise role for prostaglandins in sexual development

17 May 2004 | ScienceNOW

Telomere Repair, Well-Timed

by John Bohannon

Cloned embryos aren’t necessarily doomed to have short telomeres

21 April 2004 | ScienceNOW

A Mouse With Two Mothers

by Gretchen Vogel

Scientists create the first mammal born from two egg cells

12 April 2004 | ScienceNOW

The Shape of Cells to Come

by Mary Beckman

Starting shape determines the fate of some stem cells

2 April 2004 | ScienceNOW

This Isn't About Cloning

by Constance Holden

Bioethics council takes a new approach to banning a certain reproductive technology

24 March 2004 | ScienceNOW

Weak Jaw, Big Brain

by Elizabeth Pennisi

A mutated muscle protein may have allowed human ancestors to expand their brains

17 March 2004 | ScienceNOW

Spying on Bossy Bacteria

by Noreen Parks

Transparent fish promise clearer view of how bacteria influence their hosts

10 March 2004 | ScienceNOW

Adult Mammals May Produce Eggs After All

by Jennifer Couzin-Frankel

Work scrambles a doctrine of reproductive biology

18 February 2004 | ScienceNOW

Cloning First Starts With the Nose

by Constance Holden

Mice disprove a theory of how neurons learn to smell

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