If a genetic disorder appears in a family with no prior history, and is fully expressed by everyone carrying that allele, it is most likely a(n) ____ trait
a. autosomal dominant
b. autosomal recessive
c. X-linked recessive
d. Y-linked
e. mitochondrial
a
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A minute is the basic unit of map distance in bacteria
Indicate whether the statement is true or false
Most O2 is transported in the blood ____
a. dissolved in the plasma b. as bicarbonate ions c. bound to hemoglobin d. as carbon dioxide e. bound to bicarbonate ions
Answer the following statements true (T) or false (F)
1. The pattern of embryonic expression for a specific gene shown by RNA in situ hybridization and a GFP fusion protein will always be identical. 2. Site-specific recombination systems, such as Flp recombinase/FRT sites, can function only in a single species. 3. A barrier element between a gene and heterochromatin would prevent that gene from being transcriptionally silenced by heterochromatin spreading. 4. Kinetochores include motor proteins that exert pulling forces on spindle microtubules. 5. Both Spo11 and Cas9 are enzymes that create double-strand breaks in DNA.
What is not true about the human large intestine?
A. It compacts and stores undigested materials until their excretion as feces. B. About 4% of fluid absorption takes place in it. C. Sodium, vitamin K, and other bacterial metabolic products are absorbed across its wall. D. It is longer than the small intestine. E. It contains three relatively straight segments with no villi.