In radishes, red and white are the pure-breeding
colors, and long and round are the pure-breeding
shapes, while the hybrids are purple and oval. The
cross of a red, long radish and a white, round radish
will produce an F1 generation of what phenotype?
a. all long, red radishes
b. all long, white radishes
c. all long, purple radishes
d. all round, purple radishes
e. none of these
Answer: e
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Based on what is known about FOXP2, could Neandertals speak?
A. Yes, they had the same FOXP2 mutation as humans. B. No, they had the same FOXP2 mutation as humans. C. No, they had the same FOXP2 sequence as chimpanzees. D. Yes, they had the same FOXP2 sequence as both humans and chimpanzees. E. Yes, they had the same FOXP2 sequence as chimpanzees.
A hydrogen bond is a(n)
a. sharing of a pair of electrons between a hydrogen and an oxygen nucleus. b. sharing of a pair of electrons between a hydrogen nucleus and either an oxygen or a nitrogen nucleus. c. attractive force between a hydrogen atom and either an oxygen or a nitrogen atom that are in other molecules or within the same molecule. d. covalent bond between two hydrogen atoms. e. covalent bond between a hydrogen atom and either an oxygen atom or a nitrogen atom.
What is the number of chromosomes in a human tetraploid cell? ____________________ Fill in the blank(s) with the appropriate word(s)
Non disjunction:
a. is the cause of sex determination in birds and mammals. b. is the exchange of genetic material between the chromatids from homologous chromosomes. c. is the unequal division of the genetic material during cell division. d. is the division of cytoplasmic constituents. e. occurs during mitosis but not meiosis.