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Bio Chapter 12 Quiz
| Question | Answer |
|---|---|
| Mendel performed hybridizations by transferring pollen from the ____ of the male plant to the female ova. anther pistil stigma seed | anther |
| Which is one of the seven characteristics that Mendel observed in pea plants? flower size seed texture leaf shape stem color | seed texture |
| Imagine you are performing a cross involving seed color in garden pea plants. What F1 offspring would you expect if you cross true-breeding parents with green seeds and yellow seeds? Yellow is dominant 100 % y-g seeds 100 % y seeds 50/50 y/g 25/75 g/y | 100% yellow seeds |
| The observable traits expressed by an organism are described as its ____. phenotype genotype alleles zygote | phenotype |
| A recessive trait will be observed in individuals that are ____ for the trait. heterzygous homozygous or heterzygous homozygous diploid | homozygous |
| If black and white true-breeding mice are mated and the result is all gray offspring, what inheritance pattern would this be indicative of? dominance codominance multiple alleles incomplete dominance | incomplete dominance |
| In a mating between two individuals heterozygous for a recessive lethal allele expressed in utero, what genotypic ratios (homozygous dominant:heterozygous: homozygous recessive) would you expect to observe in the offspring? 1:2:1 3:1:1 1:2:0 0:2:1 | 1:2:0 |
| Assuming no gene linkage, in a dihybrid cross of AABB . aabb with AaBb F1 heterozygotes, what is the ratio of the F1 gametes (AB, aB, Ab, ab) that will give rise to the F2 offspring? 1:1:1:1 1:3:3:1 1:2:2:1 4:3:2:1 | 1:1:1:1 |
| The forked line and probability methods make use of what probability rule? test cross product rule monohybrid rule sum rule | product rule |
| How many different offspring genotypes are expected in a trihybrid cross between parents heterozygous for all three traits when the traits behave in a dominant and recessive pattern? How many phenotypes? 64 geno; 16 pheno 16 g; 64 p 8 g; 27 p 27g; 8p | 27 genotypes; 8 phenotypes |
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mortehay000
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