DNA &
Genes
Genes
Where in the cell is DNA located?
Nucleus
What does a punnet square show?
Possible genetic outcomes of offspring
How many Chromosomes do we have?
46
What is an allele?
Specific version of a gene
In a cross between Bb and Bb what is the chance offspring will be: bb
25%
What percent of our DNA is identical to bananas?
60%
Name the 4 nitrogen bases and put them in the right order
Adenine
Cytosine
Guanine
Thymine
A - T
C - G
T - A
G - C
If you receive Bb from punnet square which gene do you express?
BIG B!
Describe epigenetics
The study of how environmental factors and behaviors can change gene activity without altering DNA sequences
What is the full name of DNA?
Deoxyribonucleic Acid
Are freckles dominant or recessive?
Dominant
What environmental factors influence epigentics?
Lifestyle, diet, exercise, stress
What is difference between Homozygous and Heterozygous
Homozygous is same gene from each gamete
Heterozygous is different gene from gamete
What is the difference between genotype and phenotype?
Genotype: Genetic Makeup
Phenotype: Observable trait
If DNA is stretched out how many times could it reach the sun?
600 times!