If the DNA in a cell consists of 20% A, it will be G.
A. 20%
B. 30%
C. 10%
D. 80%
E. 40%
B. 30%
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In house sparrows (Passer domesticus) it is generally found that both males and females care for the eggs and young
However, some male house sparrows do not provide parental care. In addition, it is known that young that receive parental care from both the male and female are more likely to survive to fledging (leaving the nest). Which of the following activities by males that do not provide parental care would represent the most beneficial trade-off for the reduced survival of their offspring? A) attacking the nests of neighboring males B) mating with additional females and fathering more eggs C) eating to build up energy stores for migration D) grooming to eliminate parasites from their feathers
Structures that have similar structure and function but different evolutionary origins are called:
A. inherited. B. evolutionary modifications. C. analogous. D. homologous. E. uniform.
Erwin Chargaff's research determined the composition of the nitrogen bases within a strand of DNA. His work determined that
A. the percent of adenine is equal to the percent of thymine and the percent of cytosine is equal to the percent of guanine. B. the concentrations of adenine, thymine, guanine, and cytosine are all equal. C. the concentration of adenine is twice the concentration of thymine and the concentration of cytosine is twice the concentration of guanine. D. the percent of adenine is equal to the percent of guanine and the percent of cytosine is equal to the percent of thymine.
Platelets are formed when fragments from large cells called ________ break off
Fill in the blank(s) with correct word