How is natural selection related to sexual reproduction as opposed to asexual reproduction?
A) Sexual reproduction results in many new gene combinations, some of which will lead to differential reproduction.
B) Sexual reproduction results in the greatest number of new mutations.
C) Sexual reproduction allows the greatest number of offspring to be produced.
D) Sexual reproduction utilizes far less energy than asexual reproduction.
A
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In combination, the products of gap genes, pair-rule genes, and segmentation polarity genes _____
A) trigger the reorganization of the larval body into an adult body B) define the segmented body plan of the embryo C) set up the back-to-belly axis of the larval body D) direct cell movements during differentiation
Which of the following statements is true of reptiles?
A. Eggs undergo external fertilization. B. Sperm are released in the vicinity of the female. C. Eggs have an amnion and a chorion. D. Larvae become adults by metamorphosis. E. Embryonic and fetal development in all species is only by oviparity.
The outermost layer of the stele is the pericycle
____________________ Indicate whether the statement is true or false.
What is a fruit species that can be propagated by apomixis?
a. apple b. peach c. citrus d. pear e. peach