Genetics Quiz

How many chromosomes does a normal human have?
23
42
24
43
Having two identical alleles for a given gene.
Homozygous
Heterozygous
Genotype
Phenotype
What is composed of nucleotide's?
RNA
TRNA
DNA
BNA
What is trisomy?
One extra chromosome
One less chromosome
Two extra chromosomes
Two less chromosomes
Purple flowers are dominant (P). White flowers are recessive (p). What is the phenotype of "pp"?
White
Purple
Clear
Blue
Round eye shape is dominant (R). Oval eye shape is recessive (r). What trait will be expressed in "Rr"?
Round
Oval
Squint
Square
Traits represented by a lowercase letter (b).
Recessive
Dominant
Heterozygous
Homozygous
Traits represented by a capital letter (B).
Dominant
Recessive
Homozygous
Heterozygous
What is a fertilized egg called?
Zygote
Allele
Haploid
Hybrid
Who is Gregor Mendel ?
Father of Genetics
Basketball Player
Lawyer
Doctor
What's an example of a dominant trait?
AA
Aa
What is a way to predict offspring?
Punnett Square
Fertilization
Heredity
Allele
In 4 o'clock flowers, R=Red, and W=White. What is the genotype of homozygous red and homozygous white?
RW, RW, RW, RW
RR, RR, WW, WW
RW, RR, WW, RW
RR, RR, RR, RR
In 4 o'clock flowers, R=Red, and W=White. What is the phenotype of homozygous red and homozygous white?
Pink, pink, pink, pink
Red, red, white, white
Pink, red, white, pink
Red, red, red,red
If a mother carries type homozygous A blood and a father carries heterozygous type B blood what percentage of the offspring will have type A blood?
25%
50%
75%
100%
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