Exam 2: Genetics and Prenatal Development

Your friend just found out that she is pregnant after trying for six months.But she is paranoid that she is going to have a baby with a chromosomal disorder.You try to reassure her by telling her that the rate of babies born with chromosomal disorders is _____.

Susan is talking to her friend,who is at the end of her second trimester.Lucila wants to be reassured that she is not crazy,but thinks her baby actually kicks,turns,and hiccups.Lucila even thinks that the baby becomes more active if she talks to it.If you were Susan,how would you respond to Lucila's observations?

What field is concerned with the question of how much genes influence development?

How many ova are present in a female adolescent's ovaries in puberty?

Choose one prenatal period and provide a detailed overview of what happens.Include when it occurs.

Your friend just had her first pregnancy check-up and is just starting her second month of pregnancy.She is very upset that she was not given the chance to hear her fetus's heartbeat.Remembering what you learned in developmental class,what should you tell her?

How many chromosomes from each pair of chromosomes are generally inherited from the father?

Which measure allows behavior geneticists to determine the percentage of similarity in phenotype among pairs of family members and is used mostly to examine mental disorders?

What is the process that allows mixing the combinations of genes in a single chromosome,resulting in a virtually infinite possible combination of genes?

Iron-rich foods such as beef,duck,potatoes,spinach,and dried fruits are important in what way for the pregnant mother and fetus? These foods help to ____.

Recent scientific studies have shown that women should gain ____ pounds during pregnancy.

If temperament were genetically based,which of the following would have the greatest degree of similarity?

All ova,a female reproductive egg,are ____.

For individuals with fragile X syndrome,_____ tend to exhibit more apparent symptoms.

The purpose of lanugo is to ____.

Nature is to ____ as nurture is to ____.

You are pushing a stroller that has two babies in it.One boy,dressed in blue,and one girl,dressed in pink.Someone stops you tells you how beautiful your baby boy and girl are.Then they ask if they are "identical twins." You tell them they are not,but what are you thinking?

Fertilization is most likely to occur when intercourse occurs ____.

Adult individuals with trisomy-21 are _____.

What happens that determines the sex of the offspring?