Exam 2: The Beginning: From Conception to Birth

Wanda is in labor and has requested a pain reliever known as a(n)_____,which is an injection given in the spine that alleviates pain.

At around 38 weeks after conception,the _____ starts the sequence of events that prepares the fetus for delivery and starts labor.

Tamika learned in her high school science class that a female has a(n)_____ on the 23rd pair of chromosomes.

The _____ is a person's appearance,personality,intelligence,and all other traits.

Which of the following statements about international rates of low-birthweight is true?

The most common extra-chromosome condition is fragile X syndrome.

Genes with various repeats or deletions of base pairs are referred to as:

On the 23rd pair of chromosomes,males have:

After about the eight-cell stage within the zygote,cells start to _____,meaning that they take dissimilar forms and reproduce at various rates,depending on where they are located.

A trait like personality is _____,or affected by many genes.

During the embryonic period,the neural tube will become the:

MOST of the known single-gene disorders are:

_____ refers to a trait that is affected by many factors,both genetic and environmental,that enhance,halt,shape,or alter the expression of genes,resulting in a phenotype that may differ markedly from the genotype.

Fraternal twins are also called _____ twins.

Identical twins are also called _____ twins.

The rate of cesarean sections is declining worldwide.

In the United States,more than _____ of births occur via c-section.

In 22 of the 23 pairs of chromosomes,both members of the pair are closely matched.Each of these 44 chromosomes is called a(n):

All humans have about 100,000 genes.

Studies indicate that _____ may mitigate maternal depression.