Across
- 1. variation that makes a gene different from others
- 3. a gene carried on the x chromosome
- 4. mothers rest their babies on their naked chests like kangaroo moms carry their babies in a pouch
- 5. the age a fetus might survive outside the uterus if care is available
- 6. the observable characteristics of a person
- 7. first two weeks of prenatal development after conception
- 8. a body weight at birth of less than 2500 grams (5.5 lbs)
- 9. an organism's entire genetic inheritance
- 10. a body weight at birth of less than 1500 grams (3 lbs, 5 oz)
- 12. twins formed when two ova are fertilized by two sperm
- 15. a quick assessment of a newborn's health, from 0 to 10
- 18. a condition in which a person has 47 chromosomes; 21st site
- 19. a woman who helps with the birth process
- 20. symptoms of pregnancy and birth experienced by fathers
- 21. originate from one zygote that splits apart
Down
- 2. a body weight at birth of less than 1000 grams (2 lbs, 3 oz)
- 11. mother's feelings of inadequacy/sadness after birth
- 13. an agent that can impair prenatal development, results in birth defects
- 14. a developing human organism
- 16. full set of genes
- 17. a surgical birth in which the fetus is removed from the mother's abdomen