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Which enzyme functions to synthesize RNA from a DNA template?
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Which vector element below can accept the largest DNA fragment in cloning experiments?
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22. What would be the minimum dimensions of a Punnett square of a test cross with a dihybrid parent who is heterozygous at both loci?
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The following coat colors are known to be determined by alleles at one locus in horses: Palomino = golden coat; Cremello = almost white; Chestnut = brown. The following table gives the ratios obtained in matings of the above varieties:
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In a four-point testcross the number of phenotypic classes of progeny expected is
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How do ferns differ from gymnosperms?
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A female Drosophila supposedly heterozygous for two recessive mutations cn and lz that are on the same arm of the X chromosome (cn lz/+ +) surprisingly expresses both these genes. The male progeny of the female will be
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Typical ratios resulting from epistatic interactions in dihybrid crosses would be ___.
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What is made from tubulin, located near the nucleus and helps to organize cell division?
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What is a network of protein filaments that helps the cell maintain shape and is involved in the movement?
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Chromosomes that can be matched up or paired are called ___?
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Consider a species with a diploid (2n) number of 10 chromosomes. How many chromosomes would be found in a trisomic body cell?
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21. What would be the dimensions of a Punnett Square depicting a dihybrid cross?
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When an allotetraploid is backcrossed to one of its progenitor species, a sterile progeny is produced. The genomic composition of this sterile individual can be best represented by
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1. An allele is ___.
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5. In a cross of a round hybrid pea with a true breeding round parent (Ww x WW), what genotypic proportions would be observed in the offspring?
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A group of gymnosperms that resemble palm trees?
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Bryophytes are pollinated by water?
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In Drosophila, the genes r and s are linked. Flies of genotype r+ s+/ r+ s+ and r s/ r s are crossed and an F1 obtained. The F1 allele arrangement is called
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Typical phenotypic ratios resulting from epistatic interactions in a monohybrid cross would be ___.
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