1.
We inherit ________ from our parents
2.
The passing of traits from parents to child is the
basis of ______.
3.
Our genes encode the instructions that define our
traits.
4.
We have thousands of genes, which are made of DNA,
and reside in our ___________ .
5.
Humans have four complete sets of chromosomes.
6.
When parents conceive a child, they pass on _____
complete set(s) of chromosomes to the child.
7.
Unlike other cells in our body, sperm and egg cells have
only one set of chromosomes
8.
When they combine, they form the first cell of life, called
a ________, which has two sets (46).
9.
The zygote divides and develops into a child
10.
The set of chromosomes from the parent can contain chromosomes
from both of the parent’s two sets.
11.
The child can receive both of the parent’s two
chromosomes.
12.
Since the parents contribute the chromosomes
randomly, each child receives a unique set of chromosomes.
13.
Most children resemble their mothers more than their fathers.
14.
Traits are passed from generation to generation.
15.
Which of the following is a type of trait.
A. 
B. 
A trait of predisposition to a medical condition
C. 
D. 
16.
Environmental influences in our lives can shape or even
change a trait.
17.
The set of genetic information for hitchhikers thumb
is called an _____.
18.
The possible combination of alleles for the thumb trait are HH, Hh, hH or hh.
19.
___________ is to have two of the same alleles
for a trait.
20.
The _________ allele will mask the recessive allele.
21.
At the age of 18, Yakub had finished
all of the colleges and universities of his nation. What field of science did he study?
22.
Yakub discovered two traits in the gene of the original man, one black and the other ________.
23.
Racism could be classified as a behavioral trait.
24.
How many years did it take to graft out or to separate the recessive brown trait from the more dominant black trait?
25.
How many years did it take to graft out or to separate the recessive white trait from the original black trait?