Ch.6 Biology: Genes And Heredity Part 3: Question Preview (ID: 18744)

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The mating of two organisms.
a) traits
b) cross
c) Genotype
d) Phenotype

A piece of DNA that codes traits.
a) Cross
b) Gene
c) Recessive
d) Trait

Physical characterstics or traits of an organisms. (example: you have brown hair)
a) Phenotype
b) Genotype
c) Cross
d) Trait

Have 2 of the same alleles for a specific trait.
a) heterozygous
b) homozygous
c) genotype
d) phenotype

The allele that is expressed when 2 different alleles are present. (the capital letters represent this )
a) Dominant
b) Recessive
c) Genotype
d) Phenotype

Distinguishing physical characterstics that are inherited.
a) traits
b) phenoytype
c) genotype
d) dominant

Genetic makeup of a specific set of genes. (The Blue Print)
a) Genotype
b) phenotype
c) heterozygous
d) homozygous

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 segregation
b) law of critical mass
c) Law of genetics
d) Law of Mr. Smith

Crossing two traits is called?
a) monohybrid
b) dihybrid
c) tryhibrid
d) none of the above

How many chromosomes are in sex cells?
a) 23
b) 46
c) 89
d) 16

The offspring of the P generation is called the ___ generation?
a) P1
b) F1
c) F2
d) F3

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) 50
c) 75
d) 25

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

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