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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
F1
B
F2
C
F3
D
P1
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
100
B
25
C
50
D
75
3) Crossing two traits is called?
A
tryhibrid
B
monohybrid
C
none of the above
D
dihybrid
4) How many chromosomes are in sex cells?
A
46
B
16
C
23
D
89
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 critical mass
B
Law of Mr. Smith
C
law of segregation
D
Law of genetics
6) Distinguishing physical characterstics that are inherited.
A
dominant
B
traits
C
phenoytype
D
genotype
7) Genetic makeup of a specific set of genes. (The Blue Print)
A
heterozygous
B
homozygous
C
phenotype
D
Genotype
8) The allele that is expressed when 2 different alleles are present. (the capital letters represent this )
A
Recessive
B
Genotype
C
Dominant
D
Phenotype
9) Have 2 of the same alleles for a specific trait.
A
heterozygous
B
genotype
C
homozygous
D
phenotype
10) A piece of DNA that codes traits.
A
Trait
B
Recessive
C
Cross
D
Gene
11) Physical characterstics or traits of an organisms. (example: you have brown hair)
A
Phenotype
B
Genotype
C
Cross
D
Trait
12) The mating of two organisms.
A
Phenotype
B
cross
C
Genotype
D
traits
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
Dominant
B
Recessive
C
Phenotye
D
Genotype
*select an answer for all questions
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