Exam 2: Genetics and Prenatal Development

Which of the following have a 100% genetic similarity to each other?

All ova contain which sex chromosome?

What are the major teratogens during the fetal period?

The ____ is when genes establish boundaries for environmental influences rather than specifically denoting a particular characteristic.

It has been discovered that the fetus responds to sound at the end of the sixth month.What sound does the fetus prefer at this time?

Low iodine intake during pregnancy increases the risks of miscarriage,stillbirth,and abnormalities in fetal brain development.As a result,what has been done since the 1920s in developed countries?

Of the following,which is a modern technique used for fertility treatment?

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?

What condition might occur in the fetus and later in the child if the pregnant mother consumes alcohol during her pregnancy?

The blastocyst will implant itself into the uterine wall during the ____ after conception?

Genes contain paired sequences of chemicals called ____.

Latasha and Brett are having their first child and are concerned that their child may have Down syndrome because Latasha is over 40 years old.Which of the following would most likely be used to help Latasha and Brett through this process?

What prenatal technique uses a long hollow needle to extract amniotic fluid to examine the fetus's genotype?

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

When does implantation of the blastocyst occur?

Depending on the drug,what percentage of multiple births results from using fertility drugs?

The first 2 weeks after fertilization is known as ____.

What is the leading cause of low birth weight in developed countries?

The concept of reaction range proposes ____ establish(es)boundaries,whereas ____ determines where a person falls within that range.

Approximately how many genes comprise the human genome?