what is genetic mutation?1 2470
what are Alleles ?4 4104
what is Interspecific breeding ?1 4222
which gene determines Hair Color?2 3367
how do you differentiate chromosomes and chromatids ?1 2360
What do you think of cloning?1 2136
what are the symptoms of Turner's syndrome ?2 2572
what is Genetic Engineering?1 2288
what is Fruit Fly Genetics ?1 2449
How do u differentiate between Meiosis I & Meiosis II?3 5611
Does Environment affect genes?4 3249
In the definition of mutation we say sudden heritable change i the DNA, so what does sudden means here?
Is biotechnology more dangerous to other gene transfer technologies breeding?
What are the benefits/risks when company traditional and genetically engineered breeding?
what is Avian flu threat? what are its symptoms?
Why was rii locus chosen by Benzer for his experiment?
Are there alternatives to Genetic Engineering?
The village of Oblong has 400 normally-shaped residents. Transferrin is an iron carrier found in blood, and electrophoretic variation of this protein is determined by an autosomal codominant system. The citizens of Oblong were typed for their transferrin complements. The distribution of transferrin phenotypes was: 100 CC, 100 CD, and 200 DD. What is the frequency of the C allele?
cancer cells have their dna wound back wards, is that true?
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?
In cats yellow is due to gene B and black to its allele b. These genes are located on the X chromosome (sex-linked). The heterozygous results in calico (tortoise shell). What kinds of offspring (sex & color) are expected from the cross: black male & calico female? Most calico males are sterile, why?
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?
Why do we age?
The ABO blood system has been employed to settle cases of disputed paternity. Suppose, as an expert in genetics, you are called to testify in a case where the mother is type A, the child is type O and the alleged father is type B. How would you respond to the following statements of the attornies: a. "Since the mother has type A, the type O of the child must have come from the father and since my client is type B, he obviously could not have fatered the child." Made by the attorney of the alleged father. b. "Further tests revealed that this man is heterozygous and therefore he must be the father." Made by the mother's attorney.
What is the chemical composition of gene?
Why does RNA have 5 bases and DNA has only 4?