Welcome to 7th Grade
Big Ideas About Genetics (according to our Lobster Team)
Every living thing has DNA.
DNA is found in the nucleus of a cell.
In a person, you would find the same DNA in the nucleus of any of his or her cells.
DNA can be extracted from a cell’s nucleus to be examined.
Having more chromosomes does not make an organism more complex – the sequence of A, T, C & G bases within the chromosomes does.
Genes pass from 1 generation to the next through chromosomes.
A typical human has 46 chromosomes, or 23 pairs of chromosomes.
Punnet squares can be used to predict how genetic information is passed to offspring.
Genes make up our genotype and we see them in our phenotype.
Genes from your mom and dad give you your genotype and phenotype.
A combination of a person’s genes and the way he or she is raised affect how a person looks and acts.
A father’s alleles decide the gender of a baby.
There are dominant and recessive forms of alleles (genes).
A mutation is caused when a chromosome is somehow misshaped.
When genes function differently than they should the result can be good or bad (not all mutations are harmful).
Cloning is making an exact genetic copy of another organism.
Big Ideas about Cells (according to our Lobster Team)
All living things are made of at least 1 cell.
Our bodies are made of millions of cells.
Most cells are microscopic.
There are many different types of cells.
Plant and animal cells are not the same (shape, ways to obtain energy, organelles).
Plant cells use energy from the sun to make food.
Animal cells get energy from other organisms.
A cell has many parts to it called organelles.
Each organelle has a special function that helps the cell survive.
The nucleus is like a control center of a cell.
Not all cells have a nucleus.
The mitochondria produce energy for a cell.
Cells move water (osmosis) and particles (diffusion) in and out of their selectively permeable membrane to reach a steady state (homeostasis).
Every cell has DNA.
Each of our cells contain an exact copy of our own DNA.
Cells have to be able to grow and reproduce.
Cells reproduce through mitosis, which has 6 stages.
Scientists owe much of what is known about cells and the way they behave to Henrietta Lack and her cells.
Most people have precancerous cells.
Cancer cells divide rapidly and uncontrollably.
Email with any questions or concerns.