martes, 23 de noviembre de 2010

Evidence of change

this topic talks about the evidence changes that a living thing have  also the changes that a fossil have

like a horse ,dogs,catstiger,atc have an evidence change:

Fossils changes:

using what we`ve learned

This topic talks about all the cells and he type of blood that we heredity from our parents, the 23 pair  of chromosomein a body cell of a human male and female.The male have x and y  and the female have x and x.

First the type of blood that we can have

type A
type B
type AB
type O

the 23 pairs of chromosomes

The female inherit  two x chromosomes  and the male inherit one x chromosomes and one y chromosomes



martes, 16 de noviembre de 2010

how heredity works

This topic talk abouthow heredity can pass to future generation..

What is a DNA ?

deoxyrebonucleic acid

WITH THE DNA can know the name of the person its age and other things

Predicting Traits

This topic talks about how we can know if the future generation will have traits of its mother ,father ,or other parent of its family.We can know this by using a table call punett square.

also there is a chart that trace the history of trits in a family that is called pedegree

there are 2 types of traits that are dominat traits and recessive trait and dominant trait

some dominants traits

free earlobe

widows peak


some dominant traits

attached earlobe

straight hairline

no dimples

learning about heredity

Heredity is the passaing of inhereted traits from parents to ofsprings

pollination is the transfern pollen from the male part to the female part of a plant

there are to types of traits that are dominant trait and recessive trait :

dominamt trait is a form of trait that appears in hybrid generation
recessive trait is a form of trait that is hidden

whem a person burns it  have a trit of his father or mother

martes, 9 de noviembre de 2010

Geologic Time

this topic talks about the living things that lives in past years and by the time they convert in fossils, also the ideas that prove it,and what is our area and period.

fossils are any trace ,imprint, or remains of a living thing preserved in earth`s crust
 superposition is the idea that in a series of rock layers the bottom layer is the oldest and the top is the youngest

The rock cycle

Rocks are  form of little pieces of  minerals.There are three types of rocks that are igneous rock,metamorphic rock, sedimentary rock.

-sedimentary rock:a rock that forms from pieces of other rock that are squeezed or cemented together

-igneous rock: a rock that forms when hot,liquid rock material cools and hardens into a solid

metamorphic rock:is a rock that forms from another kind of rock that is changed by heat or pressure  or by a chemical reaction