Which of the following provides the basis for Mendel’s laws of segregation and independent assortment?
a. Meiosis I
b. Meiosis II
c. Interkinesis
d. Cytokinesis
a. Meiosis I
Meiosis I provides the basis for Mendel’s laws of segregation and independent assortment.
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A cytologist is examining a tissue under an electron microscope. He notices that the endoplasmic reticulum of each cell is extremely rough in appearance and he knows that the rough appearance is because of the ribosomes embedded there. He asks why there are so many ribosomes. You respond,
A. "This tissue exports lipids and is very involved with mRNA production." B. "This tissue exports proteins to other areas of the body." C. "This tissue exports various nucleic acids, hence the large number of ribosomes present on the endoplasmic reticulum in each of those cells."
Each species has a unique set of ecological requirements and roles that is referred to as its ecological ____
a. habitat b. community c. requirements d. necessities e. niche
The most common type of joint is the
a. cartilaginous joint. b. fibrous joint. c. suture. d. synovial joint. e. tooth in a socket.
An antibody's Fc region can be bound by
A) antibodies. B) macrophages. C) T helper cells. D) B cells. E) CTLs.