What is the probability that each of the following pairs of parents will produce the indicated offspring?
A) AABBCC × aabbcc ? AaBbCc
B) AABbCc × AaBbCc ? AAbbCC
C) AaBbCc × AaBbCc ? AaBbCc
D) aaBbCC × AABbcc ? AaBbCc
Ans: A) AABBCC × aabbcc ? AaBbCc
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Which of the following statements about childbirth is false?
A. Babies are usually born head first with the face pointing upward. B. The placenta is expelled as a result of muscular contractions of the uterus. C. The baby goes through a series of movements to facilitate its passage through the pelvis. D. Caesarian sections involve the removal of the baby through an incision in the abdomen and uterus. E. None of the answer options is false.
Where is the centromere found?
a. position where metaphase chromosomes align b. location where the mitotic spindle forms
c. central region of a chromosome where the spindle microtubules attach d. location where chromosomes cluster during telophase e. center of the cell where the nucleus is found during prophase
When you look at an image, it is inverted on the back of the retina and yet appears right-side-up when perceived in the brain. This change has occurred in
A. the lens. B. the rods and cones themselves. C. the retina which integrates the visual image. D. the visual regions of the brain. E. the ganglionic cells.
In her biology class, Natasha has been asked to complete a strand of DNA with the appropriate nucleotides. If half of the strand is A-T-C-C-G-A-T-C, what would she write for the other half?
A) T-A-G-C-C-T-A-C B) T-U-G-G-C-T-U-G C) T-U-G-C-G-U-A-G D) T-A-G-G-C-T-A-G