Mendel crossed purebred purple-flowered plants with purebred white-flowered plants, and all of the resulting offspring produced purple flowers. The offspring are all ________, and the allele for purple flowers is ________

A) heterozygotes... recessive
B) heterozygotes... dominant
C) homozygotes... recessive
D) homozygotes... dominant


B

Biology & Microbiology

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You are given an unknown organism to identify. It is unicellular and heterotrophic

It is motile, using many short extensions of the cytoplasm, each featuring the 9 + 2 filament pattern. It has well-developed organelles and two nuclei, one large and one small. This organism is most likely to be a _____. A) foraminiferan B) radiolarian C) ciliate D) kinetoplastid E) slime mold

Biology & Microbiology

The letter “A” in the above figure represents the

__________ fin. a. anal b. pelvic c. pectoral d. caudal e. dorsal

Biology & Microbiology

The cilia and flagella of eukaryotic cells are composed of _____.

a) pili b) tonofilaments c) microfilaments d) intermediate filaments e) microtubules

Biology & Microbiology

The sexually transmitted diseases ________ and ________ can cause pelvic inflammatory disease, in which fallopian tubes become scarred and blocked.

A. chlamydia; syphilis B. gonorrhea; genital herpes C. gonorrhea; chlamydia D. syphilis; genital herpes

Biology & Microbiology