In angiosperms, double fertilization
A. must happen to the pollen, forming the male gametophyte, and also to the egg, forming the female gametophyte.
B. happens in the eudicot group of plants with two cotyledons.
C. is a pairing of fertilization events, with one forming the sporophyte and the other forming the gametophyte.
D. results in the diploid zygote, and the triploid endosperm.
E. produces the four microspores in the male, and the four megaspores in the female.
D. results in the diploid zygote, and the triploid endosperm.
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Inflammation of the liver with necrosis of the hepatocytes and swelling due to a mononuclear response is a disease called ________.
A. mononucleosis B. jaundice C. hepatitis D. cirrhosis
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.
Which of the following is not one of the three domains of life?
a. eukarya b. archaea c. bacteria d. fungi
Which group of mammals exhibits the widest
distribution and greatest diversity? a. marsupials b. monotremes c. placentals d. marsupials and monotremes e. placentals and monotremes