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Punnett Squares
The Vocabulary
Natural Selection
Old Stuff
Miscellaneous
100
The phenotypes that result when crossing WW x Ww where W stands for purple flowers and w stands for white flowers?
What is all purple?
100
The appearance of a trait as determined by a genotype is called the ___
What is phenotype?
100
In Darwin's finches, beak shape was influenced by ___.
What is the food supply?
100
A double helix made of sugars, phosphates & nitrogen bases
What is DNA?
100
An egg cell containing 14 chromosomes is fertilized, this is how many chromosomes will be present in the zygote.
What is 28?
200
In humans, the allele for dimples is dominant. The allele for not having dimples is recessive. A woman (DD) and a man (Dd) have four children. What would be the predicted ratio of children with dimples to without dimples?
What is 1:0
200
change in a population’s gene pool over time.
What is evolution?
200
New stomachs develop in a species of hoofed animal so the animal can digest the only available grasses in the area. Immunity to an antibiotic develops in a species of bacteria. Both are changes in a species that occur over time, known as ___
What is evolution?
200
Process that produces gametes.
What is meiosis?
200
Scientists have altered crop plants to make them more resistant to insects and disease. This processes make it possible for the scientist to alter plants.
What is genetic engineering?
300
If one parent is homozygous for a certain trait and the other is heterozygous, the fraction of their offspring would you expect to be heterozygous would be ___
What is 1/2?
300
Subunit of DNA
What is a nucleotide?
300
The vole is an animal that avoids predators by living underground. Its long, spoon-like claws allow it to dig deep holes. Scientists believe the ancestors of the vole lived above ground and had pointy claws. Name the process that most likely caused the change in the vole.
What is natural selection?
300
Any physical, behavioral or physiological characteristic that allows the survival of an organism.
What is an adaptation?
300
The probability of any one child being a boy is 1/2. The probability that 8 children in a family will all be boys
What is 1/256?
400
Traits are physical characteristics that are passed from one generation to the next. Complete dominance is present. Two black seals when mated produce offspring with white fur. This would happen because ___.
What is both seals are heterozygous for their black skin color.
400
The difference between a homozygous genotype and a heterozygous genotype.
What is a homozygous genotype has 2 dominant or recessive alleles, where a heterozygous genotype would have 1 dominant and 1 recessive allele.
400
Some members of an ancestral population of birds had larger beaks than others. If larger beak size was advantageous, they would be more likely to survive and reproduce. As such, large beaked birds increased in frequency relative to small beaked birds. This process is known as ___.
What is natural selection?
400
There are two related species of deer. One deer lives in the tall grass lands in the mid-west while one lives in the mountains using the trees and underbrush as cover. Although related, they both occupy their own ___
What is a niche?
400
When there is incomplete dominance both alleles have ___
What is the same degree of influence on the trait.
500
Galactosemia is an inherited disorder in humans. A person with the disorder cannot digest the sugars in milk. The allele for normal digestion (G) is dominant; the allele for galactosemia (g) is recessive. A female who is heterozygous for the galactosemia trait and a male who has galactosemia have a child. The genotype of the father is ___. The probability of a child inheriting the disorder is ___.
What is gg 50%, 1:1, 1/2
500
The similarity & difference between codominance and incomplete dominance.
What is in codominance both traits are seen separately & in incomplete dominance the two alleles combine to produce a 3rd new phenotype. Both are dealing with dominant traits that do not completely take over.
500
Natural selection in the peppered moth.
What is the lighter moths were eaten b/c the pollution in the air made it easier for the dark moths to camouflage. The dark moths increased & the light decreased in #.
500
Mendel discovered this about recessive traits in the 1st and 2nd generations.
What is in the first generation they were hidden & in the 2nd they were expressed?
500
Darwin noted this about his finches.
What is finches in different areas developed different characteristics.