Biology 6.1.8 Flashcards
1
Q
How Many Chromosomes are Contained in Ordinary Human Body Cells?
A
23 Pairs of Chromosomes.
2
Q
22 Chromosome Pairs Control ___, & Only 1 of the 23 Pairs Carries the Genes that Determine ___.
A
Characteristics, Sex.
3
Q
What are the ‘Female Sex’ Chromosome Pair?
A
XX.
4
Q
What is the ‘Male Sex’ Chromosome Pair?
A
XY.
5
Q
What Determines what Sex a Baby will be? (2)
A
-If an X Sperm Cell Reaches the Egg Cell, The Baby will be Female (XX).
-If a Y Sperm Cell Reaches the Egg Cell, the Baby will be Male (XY).
6
Q
Egg Cells are Always…
A
X.
7
Q
Sperm Cells are Either ___ or ___.
A
X, Y.
