During a study session about evolution, one of your fellow students remarks, "The giraffe stretched its neck while reaching for higher leaves; its offspring inherited longer necks as a result
" Which statement is most likely to be helpful in correcting this student's misconception? A) Characteristics acquired during an organism's life are generally not passed on through genes.
B) Spontaneous mutations can result in the appearance of new traits.
C) Only favorable adaptations have survival value.
D) Disuse of an organ may lead to its eventual disappearance.
A
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Transduction is defined as the:
a. change of the bacterial genotypes through the exchange of DNA from one cell to another. b. internal change in the original nucleotide sequence of a gene or genes within an or-ganism's genome. c. process by which genetic elements such as plasmids and transposons excise from one genomic location and insert into another. d. mechanism that is mediated by viruses, by which DNA from two bacteria may come together in one cell, thus allowing for re-combination.
Which hormones are made in the ovaries?
a. estrogen and progesterone b. follicle-stimulating hormone c. oxytocin and estrogen d. prolactin e. leutinizing hormone and progesterone
The outermost membrane that forms the majority of the placenta is the
a. amnion. b. allantois. c. chorion. d. yolk sac. e. umbilical cord.
Convergent evolution has occurred when distantly related species have a structure that looks the same only because of adaptation to the same type of environment.
Answer the following statement true (T) or false (F)