Triploid cells have three copies of each chromosome rather than two. If a triploid cell undergoes

meiosis, it produces inviable products. Why is this the case?



What will be an ideal response?


Homologous pairing and crossing over is required for chromosomes to segregate properly during the
first division. If there are three of each chromosome type, only two can pair and the other segregates
randomly, resulting in cells that have an inappropriate number of chromosomes.

Biology & Microbiology

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_______ is the specific term referring to the net movement of water across a selectively permeable membrane

Fill in the blank(s) with the appropriate word(s).

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Which of the following processes is NOT a part of external respiration?

A) the use of oxygen and generation of carbon dioxide by the mitochondria during energy metabolism B) the movement of air into and out of the lungs by bulk flow C) the transportation of oxygen and carbon dioxide between the lungs and body tissues by the blood D) the exchange of oxygen and carbon dioxide between the blood and tissues by diffusion E) the exchange of oxygen and carbon dioxide between the lungs and blood by diffusion

Biology & Microbiology

Which one of the following produces small "fried-egg" colonies on medium containing horse serum and yeast extract?

A) Chlamydophila B) Legionella C) Mycobacterium D) Mycoplasma E) Streptococcus

Biology & Microbiology

A natural population of organisms that can produce fertile offspring belong to the same ________

Fill in the blank(s) with correct word

Biology & Microbiology