Bio 210 Exam 3 Study Guide with verified answers
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Haploidy |- |correct |answer |Having |one |set |of |chromosomes
Diploidy |- |correct |answer |Having |two |sets |of |chromosomes
Homologous |chromosomes |- |correct |answer |Chromosomes |with |the |same |genes |in |the |same |
order
How |many |rounds |of |homologous |chromosomal |replication |occurs |during |meiosis? |- |correct |
answer |One |round
When |do |the |chromosomes |replicate |during |meiosis? |- |correct |answer |Before |meiosis |I
Are |the |products |(cells) |of |meiosis |1 |haploid |or |diploid? |- |correct |answer |Haploid |cells
Are |the |products |of |meiosis |2 |haploid |or |diploid? |- |correct |answer |Haploid |cells
What's |the |key |event |during |meiosis |1? |- |correct |answer |(Crossover) |Pairing |of |Homologous |
chromosomes
What's |the |key |event |during |meiosis |2? |- |correct |answer |Sister |chromatids |separate
Synapsis |- |correct |answer |Pairing |of |homologous |chromosomes |(during |meiosis |1), |makes |a |
tetrad
Crossover |- |correct |answer |Exchange |of |genetic |material |between |homologous |chromosomes
, Tetrad |- |correct |answer |A |group |of |four |chromatids |formed |during |meiosis
Why |is |meiosis |called |a |reduction |division? |- |correct |answer |because |it |reduces |the |number |of
|chromosomes |to |half |the |normal |number |so |that, |when |fusion |of |sperm |and |egg |occurs, |baby
|will |have |the |correct |number. |Results |in |haploid |cells
P0 |generation |- |correct |answer |Parental |generation
F1 |generation |- |correct |answer |First |filial |generation
F2 |generation |- |correct |answer |Second |filial |generation
Dominant |trait |- |correct |answer |Trait |that |is |expressed
Recessive |trait |- |correct |answer |Trait |masked |by |dominant |allele
Allele |- |correct |answer |Different |forms |of |a |gene
Phenotype |- |correct |answer |Physical |expression |of |genotype
Genotype |- |correct |answer |Genetic |makeup |of |an |organism
Homozygosity |- |correct |answer |Having |two |identical |alleles |for |a |gene
Heterozygosity |- |correct |answer |Having |two |different |alleles |for |a |gene
Phenotypic |ratio |in |mono |hybrid |cross |- |correct |answer |3:1
Genotypic |ratio |in |mono |hybrid |cross |- |correct |answer |1:2:1
| | | | | | | |
Haploidy |- |correct |answer |Having |one |set |of |chromosomes
Diploidy |- |correct |answer |Having |two |sets |of |chromosomes
Homologous |chromosomes |- |correct |answer |Chromosomes |with |the |same |genes |in |the |same |
order
How |many |rounds |of |homologous |chromosomal |replication |occurs |during |meiosis? |- |correct |
answer |One |round
When |do |the |chromosomes |replicate |during |meiosis? |- |correct |answer |Before |meiosis |I
Are |the |products |(cells) |of |meiosis |1 |haploid |or |diploid? |- |correct |answer |Haploid |cells
Are |the |products |of |meiosis |2 |haploid |or |diploid? |- |correct |answer |Haploid |cells
What's |the |key |event |during |meiosis |1? |- |correct |answer |(Crossover) |Pairing |of |Homologous |
chromosomes
What's |the |key |event |during |meiosis |2? |- |correct |answer |Sister |chromatids |separate
Synapsis |- |correct |answer |Pairing |of |homologous |chromosomes |(during |meiosis |1), |makes |a |
tetrad
Crossover |- |correct |answer |Exchange |of |genetic |material |between |homologous |chromosomes
, Tetrad |- |correct |answer |A |group |of |four |chromatids |formed |during |meiosis
Why |is |meiosis |called |a |reduction |division? |- |correct |answer |because |it |reduces |the |number |of
|chromosomes |to |half |the |normal |number |so |that, |when |fusion |of |sperm |and |egg |occurs, |baby
|will |have |the |correct |number. |Results |in |haploid |cells
P0 |generation |- |correct |answer |Parental |generation
F1 |generation |- |correct |answer |First |filial |generation
F2 |generation |- |correct |answer |Second |filial |generation
Dominant |trait |- |correct |answer |Trait |that |is |expressed
Recessive |trait |- |correct |answer |Trait |masked |by |dominant |allele
Allele |- |correct |answer |Different |forms |of |a |gene
Phenotype |- |correct |answer |Physical |expression |of |genotype
Genotype |- |correct |answer |Genetic |makeup |of |an |organism
Homozygosity |- |correct |answer |Having |two |identical |alleles |for |a |gene
Heterozygosity |- |correct |answer |Having |two |different |alleles |for |a |gene
Phenotypic |ratio |in |mono |hybrid |cross |- |correct |answer |3:1
Genotypic |ratio |in |mono |hybrid |cross |- |correct |answer |1:2:1
