1.) what are versions of genes that are donated to a zygote by each parent during reproduction?

A. allele
B. dominance
C. inhrtitance
D. trait

2.) if a set of parents both have Bb genotypes, how many different types of zygotes can they form?

A. one
B. two
C. three
D. four

3.) having black hair is represented by the following alleles: A, B, and C. Which of the following genotypes represent the alleles of having brown hair?

A. aabbcc
B. AaBbcc
C. AAbbcc
D. AABBCC

4.) one cat has the genotype LI for long hair while its mate has the recessive genotype ll for short hair. What are the chances that their offspring will have short hair?

A. 25℅
B. 50℅
C. 75℅
D. 100℅

5.) which of the following is made up of a long strand od DNA, which is composed by genes arranged in a sequence?

A. autosome
B. chromosome
C. DNA
D. gene

6.) one parent has straight hair (SS) and the other has curly hair (ss). these traits both display incomplete dominance and their children will have wavy (Ss) hair. What is the genotype of thier offspring?

A. co – dominant
B. dominant
C. heterozygous
D. homozygous

7.) Two parents have normal vision, but their son is born colorblind. What must be the mother's genotype using XB for normal and Xb for color- blind vision?

A. XX
B. XBXB
C. XBXb
D. XbXb

8.) the colorblind son grows up and marries a woman with normal vision. She does not carry the color- blind allele. Their genotypes are XbXb and XBXB, respectively. By using the Punnett square solve for the percentage of the phenotype. What is the percentage that their first child will be colorblind?

A. 0℅
B. 25℅
C. 50℅
D. 75℅

9.) what is the basic unit of heredity?

A. autosome
B. chromosome
C. DNA
D. gene

10.) what determines the trait of an individual?

A. alleles
B. cells
C. chromosome
D. genes

11.) which of the following traits is NOT controlled by multiple genes?

A. colorblindness
B. eye color
C. freckles
D. hair texture

12.) where is the gene found?

A. cell
B. DNA
C. locus
D. mitochondria

13.) which of the following statements about a gene is TRUE? A gene is ________.

A. the basic unit of life.
B. found in the mitochondria.
C. composed of a DNA segment.
D. not affecting the traits and cgaracteristics of humans.

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