Homeotic genes encode transcription factor proteins that bind DNA. The DNA-binding domain of homeotic proteins is called a ____ , and is a highly conserved region in many homeotic proteins

Fill in the blank with the appropriate word.


homeodomain

Biology & Microbiology

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Gametangia are

(a) chlorophyll-producing structures. (b) sex organs. (c) a name for colony-forming algae. (d) found in slime molds.

Biology & Microbiology

____ in angiosperms occurs when a sperm cell "fertilizes" a diploid (2n) cell within the future seed (eventually forming a triploid (3n) endosperm), and a second sperm fertilizes a haploid (1n) egg

Fill in the blank with the appropriate word.

Biology & Microbiology

Herpes simplex-2 (HSV-2) causes

A. intensely sensitive vesicles on or near the genitals. B. genital lesions. C. symptoms that include urethritis, cervicitis, and itching. D. infection in neonates that contact lesions in the birth canal. E. All of the choices are correct.

Biology & Microbiology

Chromosomes that do not determine the sex of an individual are called ______.

A. autosomes B. sex chromosomes C. nonhomologous chromosomes D. homologous chromosomes

Biology & Microbiology