http://pbskids.org/dragonflytv/games/game_dogbreeding.html
Tuesday, October 27, 2015
Sunday, October 18, 2015
DNA is stored in chromosomes
The cell nucleus is the most important organelle, and it’s here that we find our DNA (deoxyribonucleic acid) packaged up tightly into structures called chromosomes. Chromosomes are long thread-like structures made of a DNA molecule and protein. During cell division, chromosomes coil up tightly into X shapes and are more easily visible under a microscope. Human cells have 23 pairs of chromosomes.
A DNA molecule is made up of a series of nucleotides arranged in 2 strands that resemble a ladder and twist to form a double helix.
Nucleotides are made up of a base, a sugar and a phosphate. The 4 bases – adenine (A), guanine (G), cytosine (C) and thymine (T) – pair with each other (A with T and G with C). It is the order or sequence of these base pairs that provides the information needed for the growth and development of our bodies. It can help to visualise the bases as letters in the alphabet that form words when they are in a certain order. These ‘words’ are calledgenes and act like a set of instructions for our cells.http://www.sciencelearn.org.nz/Contexts/Uniquely-Me/Science-Ideas-and-Concepts/DNA-chromosomes-and-gene-expression
Simply explained
http://learn.genetics.utah.edu/content/begin/tour/
Inherited Trait or Instinct
·
Inherited
traits are physical characteristics and behaviors that an organism gets from
its parents. It is born with them.
·
Eye
color, hair color, freckles, skin color and dimples are all inherited traits in
humans. Other animals and plants also
have inherited traits…some might include fur color, type of feet or body
covering, flower color, or type of leaves.
·
Instincts
are inherited behaviors. Instincts do
not have to be taught.
·
Breathing,
blinking, hibernation for some animals, migration for some animals, sleeping
patterns, roots growing down in the ground, and plants growing toward the light
are all examples of instincts.
Some traits occur because of the environment. Environment is the surroundings in which you live. Organisms develop some traits because of their environment.
A 5th grader living in the Andes Mountains of Peru may have a larger lung capacity than a 5th grader living near sea level in southern California. To adapt to the high altitudes, people living at higher altitudes often have larger lung capacities than those who live at lower altitudes.
Look at the tree in the picture below. What caused it to grow sideways instead of straight up? Growing sideways is NOT an inherited trait in this tree. It is not learned. It is not instinct. It grows sideways because of its environment. The wind blows constantly where it lives. The wind caused the tree to grow sideways.
Remember that an instinct is a behavior with which an organism is born. A learned behavior helps the organism to be successful in the environment.
Monday, October 12, 2015
Saturday, October 10, 2015
Vocabulary Needed
Trait : a quality that makes one person or thing different from another
Inherited trait : to have (a characteristic, disease, etc.) because of the genes that you get from your parents when you are born.
Acquired trait : to get or learn a trait (something)
Behavior : the way a person or animal acts or behaves
Offspring: the young of an animal or plant
Adapt :to change (something) so that it functions better or is better suited for a purpose
Perish : to die or be killed
Reproduce:to produce babies, young animals, new plants, etc
Learned behavior: a behavior that people get or have because of learning or experience
Instinctive behavior: a behavior relating to or based on instinct : based on feelings or desires that do not come from thinking or learning
Hibernation/hibernate :to spend the winter sleeping or resting
Migration/migrate: to move from one area to another at different times of the year
Dormancy/dormant:not active but able to become active
http://www.learnersdictionary.com
Inherited trait : to have (a characteristic, disease, etc.) because of the genes that you get from your parents when you are born.
Acquired trait : to get or learn a trait (something)
Behavior : the way a person or animal acts or behaves
Offspring: the young of an animal or plant
Adapt :to change (something) so that it functions better or is better suited for a purpose
Perish : to die or be killed
Reproduce:to produce babies, young animals, new plants, etc
Learned behavior: a behavior that people get or have because of learning or experience
Instinctive behavior: a behavior relating to or based on instinct : based on feelings or desires that do not come from thinking or learning
Hibernation/hibernate :to spend the winter sleeping or resting
Migration/migrate: to move from one area to another at different times of the year
Dormancy/dormant:not active but able to become active
http://www.learnersdictionary.com
Sunday, October 4, 2015
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