________ is the condition when an individual has three copies of chromosome 21

Fill in the blank(s) with correct word


Down syndrome

Biology & Microbiology

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Which one of the following enabled plants to spread across the land?

A. the increase in atmospheric oxygen B. the co-evolution of fungi C. the presence of bulk transport systems D. the evolution of new photosynthetic pathways

Biology & Microbiology

Colon polyps____

a. are mostly benign but some may become cancerous b. are difficult to cure c. are small growths that project from the wall of the small intestine d. are responsible for 500,000 deaths in the U.S. every year e. are usually benign but may become cancerous and are responsible for 500,000 deaths in the U.S. every year

Biology & Microbiology

During the early phase of the ovarian cycle, which ovarian hormone is at the highest levels?

a. GnRH b. estrogen c. progesterone d. FSH e. hCG

Biology & Microbiology

The fruiting body of members of the Basidiomycota can produce millions of ________.

A. zygotes B. rhizoids C. gametes D. spores

Biology & Microbiology