Although identical twins share 100 of their genetic code and are often similar, they are never truly identical.. Which of the following explains these differences?
a. heterozygous chromosomal deviations
b. active gene-environment relationships
c. post-natal genetic mutations
d. nonshared environmental influences
Question 2
In many cultures,
a. older brothers typically take care of younger siblings.
b. younger siblings typically turn to older sisters when their mothers are unavailable.
c. the influence of older sisters on siblings disappears after adolescence.
d. as siblings reach adolescence, their conflict increases.
Acromegaly in one individual from a pair of identical twins.
Some organisms used as models in genetic research
The molecular basis of genetic complementation
A genetic bottleneck reduces a population temporarily to very low levels, removing much of its genet
Genetic Engineering plant breeding
The amount of genetic variation within populations is far greater than the variation between populat