Chapter 3: Heredity And Environment Flashcards
1
Q
Each molecule of DNA is called a
A
Chromosome
2
Q
Chromosomes contain instructions to
A
Make all the proteins living being needs
3
Q
Complete packet of instructions is called a
A
Genome
4
Q
How many sets of chromosomes does a person have?
A
23 sets of chromosomes
5
Q
Human genome contains how many genes?
A
30,000
6
Q
Reproductive cell that directs process by which genetic information combined and transmitted
A
Gamete
7
Q
Father gametes
A
Sperm
8
Q
Mother gametes
A
Ovum
9
Q
Male and female gametes fuse and become a
A
Zygote
10
Q
What is a genotype
A
Genetic info from 46 chromosomes
11
Q
XX?
A
Female
12
Q
XY ?
A
Male
13
Q
Critical factor in determining sex of a zygote is
A
Which sperm reaches ovum first
14
Q
Monozygotic twins
A
Identical(quadruplets) twins originate from one zygote
15
Q
Dizygotic
A
Two separate zygotes
