Natural Selection
If a trait is more likely to help an organism survive, the prevalence of the trait is likely to __________ in the population
(increase, decrease, or stay the same)
Increase
A change in a gene, which can cause positive or negative effects and be passed down to an organism’s offspring
Mutation
How is a homozygous recessive genotype written?
A trait that is expressed over another trait
Dominant trait
Look at the person next to you. How much of your DNA do you have in common? 73.5%, 88.8% or 99.9%?
99.9%
Why are beneficial traits more likely to be passed onto offspring?
Organisms with beneficial traits will be more likely to survive and reproduce
The physical traits of an organism, determined by the genotype
Phenotype
Two parents Gg and gg. G represents green peas and g represents yellow peas. What percentage of the offspring will be yellow?
50%
A negative consequence of antibiotic resistance
The bacteria will continue to grow/not be killed off by the antibiotic
Having a second toe that is longer than the first toe is dominant - True or False?
TRUE
True or False - When an organism learns to do something during its lifetime, that trait is then passed down to the offspring in the next generation
False
The set of genes responsible for an organism’s unique traits
Genotype
Gg, HH, and jj are examples of these
A trait that is only expressed in the absence of a dominant trait
Recessive Trait
Having more than 10 fingers is dominant - True or False?
TRUE
When bacteria mutates and is no longer killed by the antibiotic allowing the disease to spread, it is called this
Antibiotic Resistance
A process by which favorable characteristics become more common over time due to organisms who have been able to adapt best to their environment surviving and reproducing
Natural Selection
Height, color, and disease resistance are examples of these
Phenotypes
A model used to predict the genotypes and phenotypes of a particular genetic cross
Punnett Square
*Pedigree ok
Which water animal are elephants most closely related to?
Manatee
What is a negative consequence of all organisms in a population having identical DNA and genes?
Lack of genetic variation may result in no organisms with resistance if a disease (virus, bacteria, fungus) is introduced.
Alternative forms of a gene
Alleles
Draw a Punnett square to show how two plants with a dominant gene for red flowers (R) could produce offspring with recessive white flowers.
Cross must be Rr x Rr
A human has 46 pairs of these, which contain DNA
Chromosomes
Do identical twins have the same fingerprints? -
Yes or No
NO!