Mendel's law of segregation indicates that
A. gametes have one allele copy for each gene
B. more gametes carrying the dominant allele are produced than gametes carrying the recessive allele
C. gametes are diploid
D. two alleles segregate into each gamete.
A. gametes have one allele copy for each gene
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Fluctuations in air pressure, often caused by vibration of an object, are known as:
A. light energy B. sound waves C. ultraviolet radiation D. a nerve impulse
Which body region is protected by fatty acids, acidic pH, lactic acid, and a tough cell barrier with its own normal biota?
A. Skin B. Respiratory tract C. Urinary tract D. Digestive tract E. Eyes
Phospholipids are made up of
A. five-carbon rings with two nonpolar tails. B. four fused carbon rings. C. a phosphate, two fatty acids and a glycerol. D. a glycerol and three fatty acids.
The complex polysaccharide that provides flexibility to the primary walls of collenchyma cells is called ____.
A. cellulose B. lignin C. fiber D. pectin E. cuticle