In the formation of transgenic animals, DNA is usually inserted into eggs or embryos. If some cells of the embryo do not receive the introduced DNA, the result is an organism with cells of different genotypes; the organism is known as what?
What will be an ideal response?
a chimera
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Frogs, birds, rabbits and lizards all have different forelimbs, which makes sense when you consider their different lifestyles. Interestingly, all of their forelimbs share the same set of bones—the ulna, the radius, and the humerus
These same bones are also seen in fossils of the extinct animal Eusthenopteron, which demonstrates common ancestry among these four groups of animals. Hence, these forelimbs are an example of: A. analogies. B. homologies. C. similes. D. homilies.
A group of interbreeding individuals occupying the same habitat at the same time is a(n)
A. species. B. guild. C. population. D. equilibrium. E. quadrat.
The main shaft of a long bone is termed its epiphysis
____________________ Indicate whether the statement is true or false.
These large paired bones form most of the lateral and superior walls of the cranial vault (calvaria).
What will be an ideal response?