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19 Cards in this Set
- Front
- Back
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What is DNA? |
A macromolecule that contains all of the organisms genetic code. |
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What is a chromosome? |
The form the cells take before cell division. |
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What is a Gene? |
Gene a segment of DNA that codes for a specific trait/feature. |
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What is an allele? |
One form of gene. |
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What is a dominant allele? |
An allele that shows up in the phenotypes of an organism. |
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What is the recessive allele? |
An allele that shows up in the phenotype only of pared up with another recessive allele. |
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What is the genotype? |
The allele combination for the trait combination (XX or Xy or Rr) |
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What is Heterozygous? |
A genotype that has one dominant and one recessive alleles such as Tt. (Remember that the dominant alleles are represented my capital letters and the recessive are represented as lowercase letters.) |
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What is Homozygous? |
A genotype with two dominant genes or two recessive. (Such as RR or rr) |
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Phenotype |
The physical appearance of the genotype (Round=RR, rr= Wrinkled etc..) |
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Now try and memorise or become familiar with the stages of pregnancy |
For more move to next card--> |
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Day 1 |
Conception (simplified name: fertilisation) |
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Day 18 |
The heart starts to beat. |
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Day 42 |
Brain waves recorded. |
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Eight weeks (day 56) |
All body systems are present. |
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Sixteen weeks (Day 112) |
Gender is clear and fingerprints are unique. |
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23 weeks (Day 161) |
15% of premature babies survive. |
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25 weeks (Day 175) |
79% of all premature babies survive |
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Be familiar with how to solve a punnet square: http://glencoe.mheducation.com/sites/0078778066/student_view0/chapter5/math_practice.html |
The End! |
