Answer:
Without genetic diversity, natural selection cannot occur
<span>Psychoanalysis can be used here. Psychoanalysis is a set of theories and
therapeutic techniques connected to the study of the unconscious mind, which
together form a process of treatment for mental-health disorders. </span>The basic views
of psychoanalysis include:
<span>- a
person's growth is determined by frequently forgotten events in early
childhood, rather than by inherited traits alone;
- human
behavior and cognition are mainly determined by unreasonable
drives that are deep-rooted in the unconscious;
<span>- efforts
to bring those drives into consciousness triggers resistance in the form
of defense mechanisms, chiefly repression;
</span><span>- conflicts
between conscious and unconscious material can effect in mental disturbances for instance anxiety and depression;
</span><span>- unconscious
material can start in dreams and unintentional
acts, comprising mannerisms and slips
of the tongue;</span>
</span>
Answer:
65
Explanation:
An autosomal dominant condition is one where one copy of the allele is sufficient to cause the condition. Penetrance refers to the degree to which that mutation causes the phenotype
Lets say the allele for sharp beak is S and for normal beak is s. If 2 heterozygous sharp-beaked terrapins mate, the cross is the following:
Ss x Ss
<u> S s </u>
S SS Ss
s Ss ss
The possible genotypes are SS, Ss and ss. 50% of their offspring will be heterozygous, and 25% homozygous each. Therefore, if the mutation was fully penetrant, it would be 75 out of 100 offspring would be affected.
However, the mutation is only 87% penetrant, which means only 87% of those 75 offspring would have the condition.
87% of 75 = 65.25
Therefore, we would expect 65 of their offspring to have sharp beaks
The Bering Strait Land Bridge is a good example of this. During the Ice Age, humans from Asia migrated to what now is called North America in order to thrive in new lands, with new farming style.
