__________ are jawless fishes with a backbone. Fill in the blank(s) with the appropriate word(s)
Answer: Lampreys
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When applying the Hardy-Weinberg law to a gene with dominant and recessive alleles, calculation of the allele frequencies always begins by writing the frequency of the _____________________ phenotype, then taking the _____________________ of this to obtain the frequency of the recessive allele
Fill in the blank(s) with correct word
Crowding ____
a. has a positive effect on reproduction b. decreases the growth rate of individuals c. only occurs in plant species d. causes immigration e. stimulates developmental and behavioral changes
In a nucleotide, the nitrogenous base is bonded to
A. an acid. B. a sugar. C. a phosphate. D. itself.
Upon exposure to blue light, plants not only begin to grow toward the light, but move their chloroplasts to the sunny side of each cell. The adaptive advantage of moving chloroplasts to the sunny side of each cell _____
A) maximizes light absorption by the chloroplasts for photosynthesis B) increases production of phototropic hormones C) maximizes heat absorption by the chloroplasts for cellular respiration D) increases adenosine triphosphate (ATP) production during the light-independent reactions