Harmful amounts of ________ may be absorbed by the leaf cuticle as well as by carotenoids and flavonoids.
A. carbon dioxide
B. blue and red light waves
C. chlorophyll
D. xanthophylls
E. UV radiation
E. UV radiation
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What specifically separates during anaphase of mitosis?
A. The genome B. The cytoplasm C. Sister chromatids D. Homologous chromosomes
Is natural selection the same thing as evolution?
A. Yes, they are the same because they both change populations. B. No, they are not the same because natural selection works on individuals, whereas evolution is change in populations. C. Yes, they are the same because they both involve phenotypes and genotypes. D. No, they are not the same because natural selection has never been observed.
Darwin and Wallace were the first to propose _____
A) that evolution occurs B) a mechanism for how evolution occurs C) that Earth is older than a few thousand years D) natural selection as the mechanism of evolution
Mendel postulated that individuals have genetic elements that exist in pairs, which determine a single phenotype. What do we now know these pairs of elements to be?
A) a sperm and an egg B) pairs of centromeres C) two alleles of a gene on homologous chromosomes D) two haploid sets of chromosomes E) pairs of sister chromatids