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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