Reznick and Endler's research with guppies suggested four of the following. Which one is the exception?
A. Life history traits can be inherited.
B. Life history traits evolve.
C. Life history traits can be altered over a short period of time.
D. Life history traits are not influenced by predation patterns.
E. Life history traits are coded for in DNA.
Answer: D
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Crossing-over during meiosis ____
a. holds homologous pairs of chromosomes together b. produces chromosomes consisting of two identical sister chromatids c. produces daughter nuclei with too much or too little genetic material d. creates chromosomes containing both paternal and maternal genes e. ensures that the developing zygote receives cytoplasm from one of the parents
In which of the following plants would you
NOT find a division of the leaf into distinct layers?
a. wheatgrass b. honeysuckle vines c. apple trees d. dandelions e. more than one of these
The pollen grains of pine each consists of three cells
____________________ Indicate whether the statement is true or false.
Refer to the accompanying figure. Which of the fruits listed would be classified as an accessory fruit?
a. a b. b c. e d. i e. k