C. which of the following is true about a zygote? (1) a zygote is the first cell of a new organism. (2) a human
zygote has 23 pairs of chromosomes. (3) a zygote is produced through fertilization.
a. 1 only
b. 1 and 3
c. 2 and 3
d. 1, 2, and 3

Arrange these elements of the intrinsic conduction system in the order that a depolarizing impulse travels during a normal heartbeat. rank from first to last. do not overlap any tiles. view available hint(s) reset av nodeav bundleinternodal pathwaysbundle branchessa nodepurkinje fibers

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

Anita thinks that she has heterozygous alleles for red hair.if she is correct, which of these diagrams best illustrates anitas alleles pf red hair