Author Question: Patsy and Terry are fraternal twins. This type of twinning results from __________. A) a zygote ... (Read 46 times)

swpotter12 · **on:** Jun 22, 2018

Patsy and Terry are fraternal twins. This type of twinning results from __________.

A) a zygote that duplicates and separates into two clusters of cells
B) the fertilization of one ovum by two Y-bearing sperm
C) the release and fertilization of two ova
D) the fertilization of one ovum by two X-bearing sperm

Question 2

In females, the twenty-third pair of chromosomes is called __________.

A) an autosome
B) dizygotic
C) XX
D) XY