Consider an infertile couple, of which both partners are able to produce healthy gametes, but the woman’s history of
endometriosis has rendered her unable to carry a fetus. Suppose this couple undergoes IVF with their own gametes,
followed by embryo transfer to the uterus of a gestational surrogate, and the birth of a baby. What is the genetic
relationship between the surrogate and the baby?
a. The baby shares only X chromosomal DNA with the gestational surrogate.
b. The baby shares 25% of its genes with the gestational surrogate.
c. The baby shares half of its genes with the gestational surrogate.
d. The baby is genetically identical to the gestational surrogate.
e. There is no genetic relationship between the gestational surrogate and the baby.
e
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Which of the following statements is NOT true of the
structures labeled “D” in the figure? a. They are sexual spores. b. They are haploid. c. They will germinate to produce a new mycelium. d. They will give rise to different mating strains of the fungus. e. They may fuse to produce a zygote.
To strengthen the conducting cells and help plants stand erect without water for them to float in, land plants developed
A) stomata. B) a cuticle. C) flowers. D) vascular tissue. E) lignin.
Which of the following enzymes is found ONLY in hyperthermophiles?
a. topoisomerase I b. reverse DNA gyrase c. helicase d. DNA polymerase III
The process of ____________________ equalizes the dosage of functional genes carried on the X chromosome in males and females
Fill in the blank(s) with correct word