Manx cats have no tails. When two Manx cats are bred together there is always a one third chance that a kitten will have a tail. When a Manx cat is bred to a cat with a normal tail there is a one-half chance that a kitten will have a tail
Which of the following is the best explanation for this? A) The Manx genotype exhibits variable expression.
B) The Manx phenotype is dominant, but the allele is a recessive lethal.
C) The Manx phenotype is dominant epistatic.
D) The Manx phenotype is caused by gene interactions.
E) The Manx phenotype is a result of heteroplasmy.
B
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A founder effect occurs when
A) geographic barriers separate populations. B) some individuals leave a larger group. C) individuals in a population have few children. D) mutations introduce new alleles into a population.
When a hypothesis stands after years of tests and is consistent with all of the data gathered, it is referred to as a(n) ________
a. educated guess b. law of nature c. scientific theory d. sampling error e. prediction
The teeth in the very front of your mouth are incisors
____________________ Indicate whether the statement is true or false.
Which of these is an important difference between the rough endoplasmic reticulum and the smooth endoplasmic reticulum?
A) The rough endoplasmic reticulum is the site of much protein folding and packaging, whereas the smooth endoplasmic reticulum is the site of lipid synthesis. B) The smooth endoplasmic reticulum is the site of protein synthesis, folding, and packaging, whereas the rough endoplasmic reticulum is the site of lipid synthesis. C) The rough endoplasmic reticulum is studded with chloroplasts, whereas the smooth endoplasmic reticulum is not. D) The rough endoplasmic reticulum is covered in cilia, whereas the smooth endoplasmic reticulum is not. E) The rough endoplasmic reticulum is the site of lipid synthesis, whereas the smooth endoplasmic reticulum is the site of digestion and recycling of cellular waste.