BIO 100 EXAM 2 CogBooks Questions and Answers Already Passed

BIO 100 EXAM 2 CogBooks Questions and Answers Already Passed **What are alternate forms of a gene called?** alleles **What does describing a person as having hemophilia indicate?** phenotype **Why do chromosomes come in pairs?** Because one chromosome of each pair is inherited from the mother and the other from the father. **How did Mendel ensure cross-fertilization of peas?** He manually pollinated the plants by hand, keeping them apart. **What are the observable traits expressed by an organism called?** phenotype **What principle is demonstrated when half of the gametes produced by an organism with genotype Aa receive the A allele and the other half receive the a allele?** segregation **Which statement is true about genes located on different chromosomes?** These genes are inherited independently of each other. **When will a recessive trait be observed?** In individuals who are homozygous for that trait. **What types of gametes can an individual with genotype AaBb produce?** AB, Ab, aB, ab **If a mother's genotype is Bb, what will be the composition of her eggs?** half B and half b **If you have flipped a coin 10 times and got four heads and six tails, what are the chances of getting heads on the next flip?** 50% **How many possible genotypes are there when a population has a gene with two alleles?** 3 **What is the probability of having four girls in a row?** 1/16 **What is the probability that the pair of parents with genotypes AABb x AaBb will produce an offspring with genotype AAbb?**