The phenotypes that result when crossing WW x Ww where W stands for purple flowers and w stands for white flowers?
A. all purple
B. all white
C. half purple half white
D. pink
100
D. phenotype
The appearance of a trait as determined by a genotype is called the ___.
A. genotype
B. recessive
C. dominant
D. phenotype
100
D. food supply
In Darwin's finches, beak shape was influenced by ___.
A. water
B. temperature
C. other birds
D. food supply
100
B. DNA
What is a double helix made of sugars, phosphates & nitrogen bases?
A. RNA
B. DNA
C. proteins
D. nucleotides
100
B. 28
If an egg cell containing 14 chromosomes is fertilized, how many chromosomes will be present in the zygote?
A. 14
B. 28
C. 7
D. 56
200
B. 1:0
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?
A. 2:2
B. 1:0
C. 3:1
D. 1:3
200
C. evolution
What is change in a population's gene pool over time?
A. natural selection
B. succession
C. evolution
D. niche
200
A. evolution
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 ___.
A. evolution
B. natural selection
C. recessive
D. dominant
200
A. meiosis
What is the process that produces gametes?
A. meiosis
B. asexual reproduction
C. mitosis
D. sexual reproduction
200
A. genetic engineering/gene splicing
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.
A. genetic engineering/gene splicing
B. natural selection
C. evolution
D. heredity
300
C. 1/2
If one parent is homozygous for a certain trait and the other is heterozygous, the fraction of their offspring you would expect to be heterozygous would be ___.
A. 1/4
B. 1/8
C. 1/2
D. 1
300
D. nucleotides
DNA is made of subunits called what?
A. proteins
B. ribosomes
C. traits
D. nucleotides
300
A. natural selection
The mole 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 mole lived above ground and had pointy claws. Name the process that most likely caused the change in the mole.
A. natural selection
B. genetic engineering
C. selective breeding
D. asexual reproduction
300
A. codominance
What results when one allele is not dominant over the other?
A. codominance
B. incomplete dominance
C. multiple alleles
D. heterozygous traits
300
A. 1/256
The probability of any one child being a boy is 1/2. The probability that 8 children in a family will all be boys is ___?
A. 1/256
B. 1/8
C. 1/56
D. 1/16
400
B. both parents are heterozygous
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 ___.
A. the offspring are adopted
B. both parents are heterozygous
C. both parents are homozygous dominant
D. both parents are homozygous recessive
400
B. each allele has its own degree of influence
When there is incomplete dominance,
A. one allele has more influence than the others
B. each allele has its own degree of influence
C. the alleles have no influence
D. there are no alleles present
400
C. evolution
Changes in species as a consequence of processes such as mutation and natural selection.
A. adaptation
B. evaporation
C. evolution
D. extinction
400
D. niche
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 ___.
A. forest
B. field
C. succession
D. niche
400
B. genetic variation
Which of these is necessary for natural selection to occur?
A. genetic engineering
B. genetic variation
C. asexual reproduction
D. environmental stability
500
B. pink
If RR represents red daisies and WW represents white daisies, what color does RW represent?
A. red
B. pink
C. white
D. not enough information
500
B. adaptations
Traits or characteristics that allow the survival of an organism.
A. allele
B. adaptations
C. genotypes
D. natural selection
500
D. dark moths increased in number after the 19th century
Natural selection in the peppered moth was
A. large beaks could break large seeds
B. larger wings allowed for longer flying
C. dark moths decreased in number after the 19th century
D. dark moths increased in number after the 19th century
500
A. recessive traits reappear in the 2nd generation
What did Mendel discover about recessive traits?
A. recessive traits reappear in the 2nd generation
B. recessive traits disappear altogether
C. recessive traits never appear in the 2nd generation
D. recessive traits become dominant
500
D. heterozygous for that trait
When each cell of an organism contains two different alleles for a given trait the organism is _______?
A. homozygous for that trait
B. dominant for that trait
C. recessive for that trait
D. heterozygous for that trait