In male-male combat observed in marine iguanas, why do males tend to grow to sizes that exceed the optimal size for survival?
What will be an ideal response?
Male iguanas become larger than optimal for sizes for survival because larger males tend to have more mates, and thus pass on traits that favor larger sizes.
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________ incorrectly suggested that DNA has a triple helix structure.
A) Linus Pauling B) James Watson and Francis Crick C) Maclyn McCarty D) Rosalind Franklin
The correct sequence for the stages in development from conception to birth is
A. zygote, embryonic stage, preembryonic stage, fetal stage. B. fetal stage, zygote, preembryonic stage, embryonic stage. C. preembryonic stage, embryonic stage, zygote, fetal stage. D. zygote, preembryonic stage, embryonic stage, fetal stage. E. fetal stage, embryonic stage, preembryonic stage, zygote.
In the accompanying figure, the structure labeled as 4 is the:a
basilar membrane. b. tectorial membrane. c. organ of Corti. d. sterociliary membrane. e. vestibular membrane.
A horticulturist is breeding a new variety of houseplant in which two genes control leaf color. G (allele for green) is dominant to g (yellow) and B (second allele for green) is dominant to b (yellow). The recessive homozygous condition of either gene will mask a dominant allele. What color is a plant with the genotype GgBb?
A. an intermediate yellow-green B. yellow C. variegated (yellow and green spots or stripes) D. green E. The color cannot be determined with the information given.