Adults who have children who have died from lethal recessive disorders are most likely

____________________. Fill in the blank(s) with the appropriate word(s).


ANS: heterozygous

Biology & Microbiology

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In a typical application, a DNA microarray is used to compare the ____________________

a. expression of genes in two different tissues b. alleles of each chromosome c. length of DNA fragments in yeast vectors d. changes in gene sequences within an allele through generations of a single family e. protein products produced when using different DNA sequencing techniques

Biology & Microbiology

The function of nectar is

A. provision of carbohydrates for the plant. B. attraction of pollinators. C. preservation of delicate flower parts. D. a sticky trap for parasitic insects. E. prevention of desiccation.

Biology & Microbiology

Sodium, potassium, and calcium are referred to as

a. electrolytes. b. nonelectrolytes. c. acids. d. bases. e. proteins.

Biology & Microbiology

A component of the plasma membrane that helps to maintain its fluidity is:

A) cholesterol. B) nucleic acid. C) protein. D) the phospholipid bilayer. E) carbohydrate.

Biology & Microbiology