Biological inheritance

Biological inheritance is the process by which an offspring cell or organism acquires or becomes predisposed to characteristics of its parent cell or organism. Through inheritance, variations exhibited by individuals can accumulate and cause a species to evolve.

Mechanisms of inheritance:

  1. Genetic inheritance results from DNA replication and cell division.
  2. Epigenetic inheritance results from, among other things, DNA modifications such as gene silencing.

The study of biological inheritance is called genetics, which includes also epigenetics.


In the News

[Scary] Pregnant woman says 'maternal instinct' helped her kill attack
FORT MITCHELL, Ky. - A pregnant woman who killed her attacker said a maternal instinct helped her fight off the woman who investigators believe was after her unborn child."I do believe that I fought harder because it was for my child,"Sarah Brady told ABC's "Good Morning America"in interviews aired Sunday and Monday. "It is a maternal instinct to protect your child to the very end."Katherine Smith, 22, died Thursday after luring Brady to her apartment to pick up a package supposedly delivered to the wrong address. When Smith pulled out a knife and attacked the pregnant woman, Brady fought back, striking Smith on the head with an ash tray and stabbing her three times with her own knife, police said. Brady, 26, said she didn't know Smith before the two met at Smith's apartment and can't be certain why Smith wanted to kill her."I really am not sure what was going through her mind,"Brady told ABC. "The only thing I thought was that she was going to kill me and my child and that is the only thing that ran through my mind."

Daggers Sharp but Not Penetrating
You're unlikely to find a martial arts movie as beautiful as Zhang Yimou's House of Flying Daggers, but you'll need to look elsewhere for passion. By Jason Silverman.

How to Tweak Your IPhone to Impress Buddies, Mom and the Boss
If you want to get the most out of the iPhone's pocket reality-distortion field, you'll have to do a bit of optimization. Our handy step-by-step guide makes it easy.

[Absurd] Jailed Man Gets More Time For Sandwiches
A man serving a life conviction for murder recieved an additional three years in prison for passing out cheese sandwiches in jail...

United States Small Business Administration (SBA): Hurricane Katrina D
Fact sheets and related information about disaster loans available to individuals and small businesses following Hurricane Katrina. Includes disaster notices detailing covered parishes and counties, loan information with terms and amounts, and a list of SBA disaster recovery centers in Louisiana, Mississippi, and Alabama. From the United States Small Business Administration (SBA).

Virginia Tech Researcher Reports Nano-particle Dispersion Technique Im
Incorporating nano particles into polymers has the potential to improve various properties with only a small percent of the particles. But there have been problems of clumping and altered flow. Virginia Tech researchers are solving these problems.

YouTubers to Google: Now What?
Fans of the online video-sharing site aren't quite sure what to make of everything as they watch their quirkly little community go corporate. Some are upbeat but plenty are openly hostile to the $1.65 billion deal that delivered YouTube into Google's waiting arms.

How Chronic Exposure To Tiny Levels Of Carbon Monoxide Damages Hearing
UCLA scientists have discovered how chronic exposure to low levels of carbon monoxide (CO) damages the inner ear of young rats, resulting in permanent hearing loss. At the Ca/OSHA's exposure limit of 0.0025 percent -- or 25 parts per million CO in the air -- the gas creates oxidative stress, a condition that damages the cochlear cells, leading to impairment of the auditory nerves.

Alcohol and Tobacco Tax and Trade Bureau: Alcohol Advertising, Labelin
Official announcements from this bureau of the U.S. Department of the Treasury about the regulations, requirements, and compliance issues related to alcohol advertising and labeling. The FAQ covers topics of interest to both businesses and home brewers related to how alcoholic beverages may be marketed to consumers. Includes a section on labeling requirements for organic alcoholic beverages.

Students Use Next-Gen Downloads
Dozens of colleges and universities are rolling out legal download services for students. Some of those services are underwritten by the entertainment industry -- it's called shaping habits of future customers.


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