Which of mendelssohn laws states that only one parental allele for each trait is included in a sex cell

1. which statement is true regarding monocytes? a. they digest pathogens. b. they produce antibodies against cancerous cells. c. they have a granular appearance under a microscope. d. they produce antibodies against microorganisms.

Which group of chordates does  notpossess true backbones?                 a.  birds      b.  frogs and toads      c.  lampreys      d.  crocodilians

How does a gymnosperm prevent itself from pollinating the same tree