At a chiasma, two ________ are attached to each other
A) homologous or nonsister chromatids
B) homologous or sister chromatids
C) nonhomologous chromosomes
D) daughter cells
Answer: A
You might also like to view...
In humans, normal skin pigmentation is influenced by a dominant gene (C), which allows
pigmentation to develop. All individuals who are homozygous for the recessive allele (c) are unable to produce an enzyme needed for melanin formation and are therefore referred to as albino. Two normal parents produce an albino child. What are the chances that the next child will be an albino? What will be an ideal response?
The most acute allergic response is anaphylactic shock, which can be deadly due to the histamine-induced
A) increase in capillary permeability. B) increase in peripheral resistance that decreases cardiac output. C) decrease in peripheral resistance that decreases mean arterial pressure. D) decrease in peripheral resistance that increases cardiac output. E) local decrease in resistance with little effect on mean arterial pressure.
Not all human activities contribute to heating of the atmosphere. Which of the following has a net effect favoring atmospheric cooling?
A) production of CO2 B) production of methane, nitrogen oxides, and chlorinated hydrocarbons C) production of ozone D) effects on albedo of the earth's surface E) all of the above
The difference between DNA transcription and DNA replication is _____.
A) transcription uses the enzyme RNA polymerase B) replication uses the entire DNA strand as a template C) replication produces a double helix D) all of the choices