Exam 3: In the Beginning: Hereditary, Prenatal Development Birth in a Nutshell

Recessive disorders manifest themselves in the heterozygous parent's phenotype, meaning that generations can be skipped.

Children of the same parents often look different from one another. This is a result of the random selection of genes from each parent to form the gametes, a process known as _________________

Small- for- dates or premature infants do not impose any extra burdens of psychological adjustment or developmental challenges on their parents as compared to their full- term typical weight peers.

At the peak rate of brain growth during prenatal life, as many as ________________ new neurons (nerve cells) are added every minute.

If monozygotic twins are found to differ consistently from their co- twin in some particular attribute, _________________ is implicated.

The genome map provides an overall blueprint of the complete gene complement of a human being, along with a set of landmarks enabling individual genes to be pinpointed precisely. Its completion suggests that the human genome contains between _________________ and _________________ genes.

Which of the following is not a common example of delayed gene action?

Multiple- birth households encounter more stresses than families where all the siblings are of different ages.

According to Plomin adoptive mothers were _________________ more and _________________ to their adopted children than biological mothers were to their offspring.

The degenerative effect of Huntington's chorea on the nervous system does not begin until _________________

Scarr has argued that 'good enough, ordinary parents' probably have less overall effect on their children as compared to 'super- parents' who create the ideal rearing environment for their offspring.

_________________ changes entail the operation of chemical switching mechanisms that can turn genes on or off, or enhance or dampen down the magnitude of their influence on the phenotype.

By the early age of 14 weeks, the tiny embryo's repertoire of activities is already impressive.

According to Farber (1981; 2007) the longer monozygotic twins had been apart, the greater the behavioural similarities between them.