Which of the following is true in the fern life cycle?

a. Gametophytes originate within and are dependent upon sporophytes
b. Sporophytes originate within and are dependent upon gametophytes
c. Both gametophytes and sporophytes are totally independent from each other and are
equally dominant
d. Gametophytes are free-living and photosynthetic, but are replaced by a dominant
sporophyte generation
e. Gametophytes are photosynthetic and partially independent from the sporophytes


D

Biology & Microbiology

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Meiosis in female humans is completed

a. before birth. b. shortly after birth. c. during the ovarian cycle. d. at fertilization. e. when a woman is fully mature

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The group of seed plants that has the most

species is the

a. bryophytes. b. ferns. c. gymnosperms. d. monocots. e. eudicots

Biology & Microbiology

Inclusions 

A. have a well defined function and structure. B. are permanent storage sites for nutrients and waste. C. are almost always located within the nucleus. D. are concentrated areas of stored materials.

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In Mendel's pea plants, yellow seeds are dominant to green seeds. Purple flowers are dominant to white flowers. Use Y and y for the seed color alleles and P and p for the flower color alleles. Flower color and seed color assort independently. If a plant

that is heterozygous for both flower color and seed color genes is self-fertilized, what proportion of the offspring will have one of the dominant phenotypes, either the seed color or flower color, but not both? A) 9/16 B) 9/32 C) 6/64 D) 6/16 E) 6/32

Biology & Microbiology