A base deletion occurs in the regulator gene of the LAC operon. Describe how the operation of the LAC operon might be affected?933
A single base exchange mutation occurs in the promoter of the TRP operon. How the operation of the HIS operon might be affected in two ways?1193
You want to select a bacterium that has obtained a genetic marker conferring resistance to tetracycline. How would you accomplish this?1 1370
How restriction enzymes,DNA probes are used in genetic engineering?1 1802
What is the difference betwee bacteriostatic and bacteriocidal?2 2634
How many chromosomes would normally be found in a human stomach cell?5 20413
what is the pairing rule for deoxyribonucleic acid?2 1955
If a fly has a diploid number of 12, how many chromosomes would there be in each cell at the end of telophase of mitosis?3 6625
Flower position, stem length, and seed shape were three traits that were studied by Mendel. Each is controlled by an independently assorting gene. If a plant that is heterozygous for all three traits was allowed to self- fertilize, what proportion of the offspring would be expected to show all three dominant phenotypes?2870
Cystic fibrosis (CF) occurs with a frequency of about 1/2500 Caucasian newborns and is inherited as an autosomal recessive. A woman had an older sister die from complications of this disease. CF is not present among relatives of her husband. Both the woman and her husband have normal phenotypes. What is the chance this couple will have a CF child
Flower position, stem length, and seed shape were three traits that were studied by Mendel. Each is controlled by an independently assorting gene. If a plant that is heterozygous for all three traits was allowed to self- fertilize, what proportion of the offspring would be expected to show all three dominant phenotypes?
Why do we age?
Why was rii locus chosen by Benzer for his experiment?
Does unwinding DNA cause aging?
Has vitamin c been produced in a human naturally before?
In mice colored coat is dominant to albinism. Sniffles, a male mouse with a colored coat is mated to Esmeralda, an alluring albino. The resulting litter of six young all had colored fur. The next time around Esmeralda was mated with Whiskers, who was the same color as Sniffles; some of this litter were white. a)What are the probable genotypes of Sniffles, Esmeralda, and Whiskers? b) If a male of the 1st litterwas mated to a colored female of the 2nd litter, what phenotypic ratio might be expected among the offspring? c)What would be the expected results if a male of the 1st litter was mated to an albino from the 2nd?
Are there alternatives to Genetic Engineering?
What ethical dilemmas should be considered when genetic engineering is put into practice?
In cucumbers normal leaves (N) are dominant to curled leaves (n) and elongated fruit (L) is dominant to spherical fruit and these genes are linked on the same chromosome. If a pure-breeding normal-leaved, elongated fruit cucumber is crossed with a curled-leaved, spherical fruit cucumber, what will be the phenotype of the F1? the phenotypic ratio of the F2?
What are the down sides of Genetic Engineering?
how was highschool like for a person diagnosed with turner's syndrome? and really difficult subjects?
7) Diabetes is recessive. A) If woman has diabetes and marries a man that doesn’t have it, is it possible for their offspring to acquire this disease? A A Aa Aa Aa Aa a a genotypes Phenotype 100% Aa, Heterozygous 100% No diabetes B) If none of the father’s ancestors had ever had diabetes, would their children have a chage of getting the disease? Explain
What situations might be viewed as ethical uses of human cloning? Are you doubtful, fearful, or hopeful about human cloning?
was math a subject in high school of difficulty for a person diagnosed with turner's syndrome?