First Trimester
Second Trimester
Third Trimester
Genetic Defects
100

From weeks 3 to 9, the developing baby is called this 

Embryo

100

During the second trimester, the baby begins to develop hair, eyebrows, and these. 

Eyelashes

100

The baby’s movements do this as it runs out of room in the uterus.

Decrease

100

Each zygote contains this number of chromosomes,

46

200

By the end of the first trimester, the baby is called this.

Fetus

200

The baby’s skin looks like this during the second trimester because it still lacks fat.

Wrinkled

200

In preparation for birth, the baby moves into this position, with the head facing downward.

head down

200

A person’s genetic traits are determined by these molecules.

DNA

300

The first trimester lasts from week __ to week __.

1 to 12

300

The second trimester begins at week __ and ends at week __.

13 to 27

300

The third trimester starts at week __ and ends at week __.

Weeks 28 to 40

300

This tool, named after a scientist, is used to predict the probability of inheriting certain traits.

Punnett Square

400

hese two structures form to provide nutrients to the baby during the first trimester.

Placenta and Umbilical Cord

400

The baby’s __________ continue to mature as it becomes more active with movements.

Organs

400

When the baby drops into the mother’s pelvis during the third trimester, this sensation occurs.

What is lightening?

400

This is the term for the observable traits of an individual.

Phenotype

500

This protective fluid-filled sac surrounds the baby. 

What is the amniotic sac?


500

The baby begins to practice these movements, which prepare it for life outside the womb

Sucking on their thumb and Swallowing

500

This organ must dilate before the baby can pass through the birth canal.

Cervix

500

This condition is caused by an extra copy of chromosome 21, resulting in developmental and physical delays.

What is Down syndrome?

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