The number of chromosomes in diploid eukaryotic cells

A.  is 46.
B.  can be predicted by the size of the organism.
C.  changes as each organism grows and ages.
D.  varies considerably from 2 to over 1000 in different species.


D.  varies considerably from 2 to over 1000 in different species.

Biology & Microbiology

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Seals and penguins both have streamlined body forms that allow them to move through water efficiently. This similarity in body shape is mostly likely the result of:

A. convergent evolution. B. shared ancestry. C. homology. D. phylogeny. E. cladistics.

Biology & Microbiology

Hox genes, one class of ____ genes, contain a conserved ____ region to which transcription factors containing a

corresponding ____ bind.

a. maternal effect; homeodomain; homeobox

b. segmentation; homeobox; homeodomain c. segmentation; homeodomain; homeobox d. homeobox; homeobox; homeodomain e. homeobox; homeodomain; homeobox

Biology & Microbiology

End result of Meiosis I

What will be an ideal response?

Biology & Microbiology

Four of the five answers listed below are related by a unifying characteristic. Select the exception

a. ionic bond b. covalent bond c. polar bond d. hydrogen bond e. cluster of nonpolar groups

Biology & Microbiology