DNA
The name of all 4 nitrogenous bases in DNA
Adenine, Guanine, Cytosine, Thymine
Alternate forms of a gene is known as an ____.
Example: blue eyes, brown eyes, etc.
Allele
Describe natural selection
Natural selection is the process of characteristics changing in a population over many generations.
- The most successful traits are passed down
What is the largest organ in the human body?
Skin
DNA strand: ATC
What is the mRNA strand?
UAG
Describe the term dominant trait.
Give a genotype example (using letters)
A dominant trait takes over any recessive trait. It is the trait that is expressed regardless.
Genotype: AA, BB, Aa, Bb
A gardener removes all of the dandelions and only plants sunflowers
This is an example of __________ selection.
Artificial selection
Which blood cells help fight infections?
White blood cells
A strand of DNA has 10% Adenine.
What is the percent of Guanine?
A:10%, T: 10%, C: 40%,
GUANINE would be 40%
Both alleles of a trait are both expressed at the same time.
This is an example of ______ inheritance.
Codominance Inheritance
A _____ is a permanent change in the DNA of an organism.
- Can make new alleles
- Can create variation
- Can either be harmful, beneficial or no effect
Mutation
If you unwound the DNA in a single human cell, approximately how long would it be?
2m
What 2 components make the DNA backbone?
Sugar and phosphate
This trait follows traditional mendelian dominant and recessive traits.
This is an example of ___________ inheritance.
Complete dominance inheritance
When a species completely disappears from Earth.
This is known as an ________.
Extinction
Which ecosystem contains the greatest biodiversity?
Tropical rainforest
Describe the term phenotype.
Give 1 example.
Phenotype: the physical description of a trait/observable characteristics
Example: I see that the apple is red.
A very coiled and condensed version of a DNA molecule is known as a _______.
Chromosome
A genetic advantage that improves an organism’s chance at survival and reproduction.
This is known as ________ advantage.
Selective Advantage
Which animal can change color to blend into its surroundings?
Chameleon