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Ch.6 Biology: Genes And Heredity Part 3
Test Description: Genes and Heredity
Instructions: Answer all questions to get your test result.
1) The offspring of the P generation is called the ___ generation?
A
P1
B
F3
C
F2
D
F1
2) B= Brwon and b+blue. If you cross a male with blue eyes (bb) and a female with brown eyes (B/b) what is the chance they will have a child with brown eyes
A
75
B
50
C
100
D
25
3) Crossing two traits is called?
A
monohybrid
B
tryhibrid
C
dihybrid
D
none of the above
4) How many chromosomes are in sex cells?
A
46
B
89
C
16
D
23
5) Law stating the organisms inherit 2 copies of each gene, one from each parent and organisms only give 1 copy of each gene to their offspring.
A
Law of Mr. Smith
B
Law of genetics
C
law of segregation
D
law of critical mass
6) Distinguishing physical characterstics that are inherited.
A
phenoytype
B
dominant
C
genotype
D
traits
7) Genetic makeup of a specific set of genes. (The Blue Print)
A
homozygous
B
heterozygous
C
Genotype
D
phenotype
8) The allele that is expressed when 2 different alleles are present. (the capital letters represent this )
A
Genotype
B
Recessive
C
Phenotype
D
Dominant
9) Have 2 of the same alleles for a specific trait.
A
genotype
B
phenotype
C
heterozygous
D
homozygous
10) A piece of DNA that codes traits.
A
Recessive
B
Trait
C
Cross
D
Gene
11) Physical characterstics or traits of an organisms. (example: you have brown hair)
A
Genotype
B
Cross
C
Trait
D
Phenotype
12) The mating of two organisms.
A
Genotype
B
traits
C
Phenotype
D
cross
13) Alleles that is not expressed when 2 different alleles are present. Is only expressed when there is two copies of it. (the lower case letters represent this)
A
Phenotye
B
Dominant
C
Recessive
D
Genotype
*select an answer for all questions
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