Among evolutionary biologists the idea of sympatric speciation is controversial

a. true
b. false


a. true

Biology & Microbiology

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Nondisjunction during meiosis I results in ____

a. the generation of an extra daughter cell b. a change in the status of a daughter cell from diploid to haploid c. a change in the status of a daughter cell from haploid to diploid d. one pole of the cell receiving neither member of a homologous pair of chromosomes e. a gamete that cannot fuse with another gamete

Biology & Microbiology

Four of five mammals below are known to have been

cloned. Select the exception. a. mules b. deer c. cats d. goats e. humans

Biology & Microbiology

D 92. Matching I. Choose the one most appropriate

response for each. 1. ___ adipose tissue 2. ___ blood 3. ___ dense connective tissue 4. ___ glandular epithelium 5. ___ loose connective tissue 6. ___ interstitial fluid 7. ___ neuron 8. ___ epidermis A. ligaments and tendons are made of this B. contains collagen and elastin; acts as a packing material that supports internal organs C. receives, conducts, and initiates signals in response to environmental changes D. stores fat E. offers resistance to mechanical injury and loss of internal fluids; also a barrier against microorganisms F. secretes extracellular products such as sweat, mucus, tears, and saliva G. fluid ground substance plus free cells; involved in transport, pH, and temperature stability H. extracellular fluid that bathes cells and tissues

Biology & Microbiology

How may the degradation of telomeres result in cellular aging? What will be an ideal response?

Biology & Microbiology