Which of the following defines the principle of linkage?
A. Two or more genes that are physically connected on a chromosome
B. Genes that are transmitted to the next generation as a group
C. The process by which genetic information is exchanged between homologous chromosomes
D. All of the answers are correct
E. Both two or more genes that are physically connected on a chromosome and genes that are transmitted to the next generation as a group
E
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A gland located in the dermis of the skin that helps to regulate body temperature is the ________ gland, which is a type of ________ gland
Fill in the blank(s) with correct word
In order for learning to be a central part of the life of an animal, all of the following are true except which one?
A. It must have the capacity to remember. B. It must be territorial. C. It typically lives a long time. D. It typically experiences unpleasant stimuli which it avoids.
A child may be given the vaccine for chickenpox. If the child goes to school and plays with other children who have the chickenpox virus, the vaccinated child will not get sick. Why is this?
A) Vaccines introduce a friendly virus into cells so they cannot be infected with a second virus. B) Vaccines stimulate macrophages to work extra hard to fight infections. C) Vaccines produce a primary response in which memory cells are generated that respond rapidly in a second exposure. D) Vaccines act like antibiotics so that any organism in the body will be destroyed before the immune system has to respond.
upon fertilization, the offspring have the ______ number of chromosomes
Fill in the blank(s) with the appropriate word(s).