Question 1

Which hormone is primarily responsible for maintaining the uterine lining during the early stages of pregnancy until the placenta takes over?

Accepted Answer

Progesterone

Question 2

During true labor, which hormone is released in a positive feedback loop to stimulate uterine contractions?

Accepted Answer

Oxytocin

Question 3

A newborn presents with yellowish skin color shortly after birth. What is the most likely cause and the standard treatment?

Accepted Answer

High bilirubin levels; phototherapy with UV light

Question 4

Which stage of childbirth is typically the longest and involves the widening of the cervix?

Accepted Answer

Cervical dilation

Question 5

A baby is born in the breech position. Which of the following best describes this presentation?

Accepted Answer

The baby's buttocks or feet are positioned to be delivered first

Question 6

Which of the following best describes the difference between genotype and phenotype?

Accepted Answer

Genotype is the genetic code; phenotype is the observable trait

Question 7

If both parents are heterozygous for a gene (Bb), what is the probability that their child will be homozygous recessive (bb)? Use a Punnett square to solve.

Accepted Answer

$$\frac{1}{4}$$

Question 8

Which of the following is an example of an autosomal dominant disorder?

Accepted Answer

Marfan syndrome

Question 9

A male child inherits an X-linked recessive allele for colorblindness from his mother. What is the probability he will express the trait?

Accepted Answer

100%

Question 10

Which of the following best explains why labor pains occur during childbirth?

Accepted Answer

Myometrial hypoxia due to strong contractions

Question 11

Which hormone is responsible for the initial maintenance of the corpus luteum during early pregnancy?

Accepted Answer

hCG

Question 12

A karyotype analysis reveals three copies of chromosome 21. What condition does this indicate?

Accepted Answer

Down syndrome

Question 13

Which of the following best describes the role of prostaglandins during labor?

Accepted Answer

They stimulate uterine contractions

Question 14

If a genetic disorder is caused by a lethal dominant allele, what is the expected outcome for individuals who inherit two copies of the allele?

Accepted Answer

They will not survive to birth

Question 15

Which of the following best describes the process of involution after childbirth?

Accepted Answer

The uterus contracts and returns to its pre-pregnancy size

Question 16

A woman with genotype Bb (heterozygous) for a flower color gene mates with a man who is BB (homozygous dominant). What is the probability their child will have white flowers (bb)?

Accepted Answer

0%

Question 17

Which hormone increases significantly prior to labor and stimulates the placenta to increase estrogen production?

Accepted Answer

Cortisol

Question 18

Which of the following best describes a homozygous genotype?

Accepted Answer

Two identical alleles for a gene

Question 19

Which of the following is NOT a function of oxytocin during labor?

Accepted Answer

Maintaining the corpus luteum

Question 20

A patient is diagnosed with Marfan syndrome, an autosomal dominant disorder. If one parent is heterozygous (Mm) and the other is homozygous recessive (mm), what is the probability their child will inherit Marfan syndrome?

Accepted Answer

$$\frac{1}{2}$$

Development and Inheritance: Pregnancy, Labor, and Patterns of Inheritance

Study Guide - Practice Questions

Study Guide - Flashcards