If two alleles at a specific genetic locus on homologous chromosomes are different, they are (heterozygous/homozygous).
What will be an ideal response?
heterozygous
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What is true of most deciduous trees in the temperate zone?
a. they spend all of their energy on reproduction b. growth and reproduction occur simultaneously c. they only produce one or two offspring annually d. they produce thousands of seeds for one or two years e. they only begin to breed after reaching adulthood
Because enzymes affect the speed of chemical reactions without being consumed, they are referred toas:a
hydrogen acceptors. b. activation energy. c. catalysts. d. cytochromes. e. transformation proteins.
What two processes results in genetically-identical products?
a)mitosis and meiosis b)meiosis and asexual reproduction c)meiosis and sexual reproduction d)mitosis and sexual reproduction e)mitosis and asexual reproduction
ACh regulates neuromuscular junction through (i)______________, which is expressed in skeletal muscle. (ii)_________ is an (iii)_________ of the receptor.
a) (i) ACh nicotinic receptor, (ii) nicotine, (iii) agonist b) (i) ACh muscarinic receptor, (ii) nicotine, (iii) agonist c) (i) ACh nicotinic receptor, (ii) muscarine, (iii) antagonist d) (i) ACh muscarinic receptor, (ii) muscarine, (iii) antagonist