Indicate if the conditions described would result in the development of a male or a female individual. SRY is a gene on the Y chromosome that is involved in initiating development of the male phenotype in humans.
Answer:
Only one X chromosome = FEMALE
One X chromosome and a Y chromosome with the SRY gene deleted = FEMALE
One normal X chromosome and an X chromosome with an SRY gene insertion = MALE
Two X chromosomes and a Y chromosome = MALE
An individual with only one X chromosome and a Y chromosome with an SRY gene mutation = FEMALE
Four X chromosomes and a Y chromosome = MALE
One each of the X and Y chromosome = MALE
You might also like to view...
Sites of transcription and therefore most of the genes along the length of the chromosome appear to be found in
A) heterochromatin. B) euchromatin. C) constitutive heterochromatin. D) centromeric regions.
The Calvin cycle reactions
a. produce carbohydrate. b. convert one form of chemical energy into a different form of chemical energy. c. regenerate more RuBP. d. use the products of the light reactions. e. All of these are correct.
By their experimentation using the Neurospora fungus, Beadle and Tatum were able to propose the far-reaching hypothesis that ________
A) prototrophs will grow only if provided with nutritional supplements B) the role of a specific gene is to produce a specific enzyme C) genetic recombination occurred in Neurospora D) more than one codon can specify a given amino acid E) several different enzymes may be involved in the same step in a biochemical pathway
A scientist isolates a mutant of a gated ion channel that transports ions into the cell in the presence of a particular chemical signal. She determines that the mutation causes the channel to remain open even in the absence of any chemical signal. She measures concentrations of the ion on either side of the membrane and finds that the concentration is higher inside the cell than outside at the beginning of the experiment. After an hour, she measures the concentrations again. What do you expect she will find?
A) The concentration of the ion has increased inside the cell after an hour. B) The concentration of ion inside the cell is equal to the concentration outside the cell. C) The concentration of the ion has become higher outside the cell than inside the cell after an hour. D) The concentrations of the ion inside and outside of the cell have remained constant. E) The ions have all diffused into the membrane.