Offspring Organism – Biology Hw

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Offspring Organism – Biology Hw

The key terms of Biology Homework include, Offspring, Organism, Active Transport, Cell Membrane.


Primary producers

Are plants and they provide most of the food and oxygen;

the first producers of energy-rich compounds that are later used by other organisms


Linnaeus

scientist who came up with method of naming organisms with a 2 part scientific name called binomial nomenclature


Darwin’s Theory of Natural Selection

1. More offspring are born into a population that can survive.
2. These offspring all contain variations
3. These offspring must compete for natural resources
4. The organisms with the best variations will survive and reproduce. (Survival of the fittest)
5. Over time, descent (the ancestors will be different from offspring) with modification will occur.-


Mutations

change in a DNA sequence that affects genetic information;
can passed on to offspring if they occur in the gametes


Gametes

reproductive cells, have only half the number of chromosomes as body cells;
in humans, the egg or sperm


Homozygous

Both alleles are the same (TT) for homozygous dominant or (tt) for homozygous recessive (I used the letter T for an example only. This could be any letter)


Heterozygous

Alleles are different (Tt)


Alleles

different forms of a gene


Chromosomes

threadlike structures made of DNA molecules that contain the genes


Genes

sequence of DNA that codes for a protein and thus determines a trait


Dominance

an organism with a dominant allele for a particular form of a trait will always exhibit that form of the trait. (ex. Bb —The big B would be dominant;
Allele which masks the presence of a recessive
Ex: AA or Aa


Recessive

of genes;
Two recessive alleles in order for genotype to be expressed.
Ex: aa


Punnett Squares

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Punnett Squares 2

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Order of Organism Complexity

Cell, tissue, organ, organ system, organism


Evolution

Is change in organisms over time


Natural Selection

Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest


Survival of the Fittest

process by which individuals that are better suited to their environment survive and reproduce most successfully; also called natural selection;
One who has most surviving off spring most fit.


Pathogens

Cause infectious diseases


Parasites

Live off of a host and will eventually cause the death of the host


Primary producers

Are plants and they provide most of the food and oxygen;

the first producers of energy-rich compounds that are later used by other organisms


Linnaeus

scientist who came up with method of naming organisms with a 2 part scientific name called binomial nomenclature


Darwin’s Theory of Natural Selection

1. More offspring are born into a population that can survive.
2. These offspring all contain variations
3. These offspring must compete for natural resources
4. The organisms with the best variations will survive and reproduce. (Survival of the fittest)
5. Over time, descent (the ancestors will be different from offspring) with modification will occur.-


Mutations

change in a DNA sequence that affects genetic information;
can passed on to offspring if they occur in the gametes


Gametes

reproductive cells, have only half the number of chromosomes as body cells;
in humans, the egg or sperm