two diploid cells, each with the same amount of genetic material and the same genetic information
The cell cycle results in the production of ______.
In humans, free earlobes (E) are dominant to attached earlobes (e) and the presence of freckles (F) is dominant to the absence of freckles (f). If an individual heterozygous for both of these traits were to mate with an individual with attached earlobes and no freckles, what is the probability of having a child with attached earlobes and freckles?
The phenotype of the heterozygote falls between the phenotypes of the homozygotes.
What is the key to the recognition of incomplete dominance?
An individual with (naturally) curly hair and an individual with (naturally) straight hair mate; all of their offspring have (naturally) wavy hair. What is the relationship between the alleles for hair texture?
An individual with (naturally) curly hair and an individual with (naturally) straight hair mate; all of their offspring have (naturally) wavy hair. If an individual with wavy hair mates with an individual with straight hair, what is the probability that their child will have curly hair?
The heterozygote expresses the phenotype of both homozygotes.
What is the key to the recognition of codominance?
An individual with the blood group genotype LMLN has the phenotype MN. What is the relationship between the LM and LN alleles?
1 MN : 1 N
An individual with the blood group genotype LMLN has the phenotype MN. What is the expected phenotypic ratio of a cross between a person with phenotype N and a person with phenotype MN?
Marfan syndrome is the result of inheriting a single allele. Individuals with Marfan syndrome are tall and long-limbed, and have both cardiovascular and eye defects. The inheritance of Marfan syndrome is an example of ______.
The trait exhibits a continuous distribution.
What is the key to the recognition of a trait whose expression is determined by the effects of two or more genes (polygenic inheritance)?
the behavior of chromosomes during anaphase I and anaphase II
What is the basis of Mendel's laws?
What is the best explanation for a BbCc × bbcc cross producing offspring in a 5:5:1:1 phenotypic ratio?
No sugar would be made by the plant.
If an herbicide blocked the Calvin cycle before the generation of glyceraldehyde 3-phosphate (G3P), which of the following statements would be true?
preventing the radiation of heat from Earth to space
The primary mechanism by which CO2 contributes to global warming is by ______.
all of the above
Which of the following contribute(s) to global warming?
A) burning carbon-based fossil fuels
B) clear-cutting forests
C) releasing CFCs
D) burning coal
Oxygen is highly corrosive; therefore, which of the following would provide definitive evidence of large amounts of O2 in the atmosphere?
all of the above
Plants provide which of the following to humans?
B) energy source (fuel)
D) raw materials
taking in carbon dioxide and making carbohydrates
Photosynthesis contributes to plant growth by _____.
Different species of plants produce different types of pigment molecules that utilize different wavelengths of light.
Why do some plant species require shaded conditions while other plant species require bright sunlight?
decreased amounts of ATP being produced by the plants
If you provided your shade-tolerant plants with their preferred wavelength of light, but only minimal amounts of water, which of the following would you expect to occur?