Exam 20: Sexual Reproduction, Meiosis, and Genetic Recombination

The genotype of a particular pea plant is TtYy, corresponding to a phenotype of tall and yellow. How many different types of gametes are expected to be produced by this individual?

Which of the following organisms spends its life cycle in the haploid state?

In mosses and fungi, the process of meiosis produces

You are attempting to clone your first gene. Up to the point of screening, everything has gone well. The vector has a gene for ampicillin resistance. In addition to the gene DNA, the insert also carries a gene for streptomycin resistance. Based on restriction digest, if properly inserted into the vector, your inserted DNA should be located within the ampicillin gene. Therefore, when screening you should look for clones that are

Of the subphases of prophase I of meiosis, the phase at which mammalian egg cells are arrested for years during oogenesis is

As a result of nondisjunction, an individual with Turner syndrome is genotypically XO- lacking one of the sex- determining chromosomes. Taking this into account, the fusion of the gamete containing the extra chromosome with a normal gamete could result in an individual with the genotype

During bacterial conjugation, you wish to examine genes associated with the F plasmid of your bacterial strain of interest, as you feel that it possesses an additional gene. You are able to easily determine the presence or absence of the gene you believe to be associated with the plasmid. In order to investigate this possibility, you must allow conjugation between your strain and a compatible strain that is

During bacterial conjugation, interrupted matings yielded the following information: leu 10 minutes, arg 8 minutes, str 15 minutes, and amp 12 minutes. Based on this information, the order of the genes beginning at the origin is

A series of three genes is known to be on the same chromosome. In examining recombination events, you obtain the following data: no observable recombination 30\% between A and B 15\% between B and C 35\% between A and C 20\% What is the order of genes on this chromosome?

The genes along a particular linear chromosome are illustrated below: The frequency of crossover events between these loci will be least frequent when considering genes

A bacterial cloning vector for the cloning of large DNA fragments that was derived from an F plasmid is the

Which of the following is NOT a "natural" means of transferring DNA in prokaryotes?

The first disease to be treated by gene therapy was .

The phases of meiosis that most resemble those of mitosis are

You have recently purchased a black angus bull named Maxwell, an advertised "pure- breeding" champion, for which you pay $1,000,000. You mate Max with several cows that are verified pure breeding black angus cows. Several years later, you mate different pairs of Max's offspring (F1 x F1)and find that with certain pairings, approximately one fourth of the progeny are red (F2). If B = black and b = red, what were the genotypes of the original cross, Maxwell x cow?