Unit II Assignment—Genetics Worksheet
Gregor Mendel’s Experiments, Theories, and Findings
1. Mendel observed that pea plants had traits, such as color, that were either “one or the other,” never something in between. Discuss the correlation between Mendel’s factors, what they might be, and why pea plant traits come in one form or another—e.g., gray or dark red—rather than blended.
Your response must be at least 75 words in length.(Type your response in the blank area below; it will expand as needed.)
Mendel’s factors are hereditary units now known as genes. Genes are the basic physical and functional units of heredity. Mendel found out that there are multiple forms of these factors which are now called alleles. An organism inherits a pair of alleles, one from each parent. If the inherited pair is the same the organism is said to be homozygous. If the inherited pair is different, then the organism is heterozygous. For heterozygosity: the alleles can exhibit dominance and
recessive characteristics and also co-dominance.
2. Let’s imagine that we are studying only one trait, that of green- or yellow-colored seeds. Mendel bred his peas until they either produced seeds of one color or the other. These purebred plants he called thep generation (“p” for parental generation). He then cross bred green plants with yellow ones and discovered that all the offspring were yellow-colored. Mendel called the offspring of the purebred plants the F1 generation.
Explain why all the offspring in the F1 generation were yellow instead of half being yellow and half green, or some other mix of the colors. Hint: Remember that Mendel coined the termsdominant andrecessive.
Your response must be at least 75 words in length.(Type your response in the blank area below; it will expand as needed.)
Punnett SquaresReginald Punnett was a British geneticist who developed the Punnett square to explain how the chromosomes of parents cross and produce offspring. In order to solve genetics problems using a Punnett square, it is necessary to a) understand the associated vocabulary and b) understand some of the rules for solving the problems.
Before you continue XXXX XXX XXXXXXXX XXXXX, XXXXXX XXX XXXXXXX XX the XXXXXXXXXXX,XXXXXXXX,recessive,XXXXXXXXXX,heterozygous,XXXXXXXX andphenotype.
XXX XXXXXX also XXXXXX the XXXXXXX XXXXXX Basics video linked in the unit lesson.
X. In corn XXXXXX, XXX allele XXX XXXXX XXXXXXX (G) XX XXXXXXXX over clear kernels (g). XXXXX a XXXXXXXXXX XXXXXXXX plant with a homozygous recessive XXXXX.
Key:Genotype XX XXXXXXX: XXXX x XXXX
Parent #1
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XXXXXX #2
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X
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G
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g
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XX
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Gg
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g
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Gg
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XX
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XXXX XX XXX phenotypic ratio of XXX XXXXXXXXX in XXXXXXXX 3?
4. XXXXXX seeds XXX XXXXXXXX over green seeds in pea XXXXXX. Cross a XXXXXXXXXXXX (XXXXXX XXXXXX) XXXXX with a XXXXX seeded plant.
XXX:Genotype of parents: ___Yy_______ x XXXXXXXXXXXX
XXXXXX #X
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Parent #X
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X
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y
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y
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Yy
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yy
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y
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Yy
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yy
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5. XXX cross two XX XXX heterozygous F1 XXXXXXXXX from XXXXXXXX #2.
Parent #1
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Parent #2
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Y
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y
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Y
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YY
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Yy
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y
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Yy
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yy
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Directions(Example: If XXX XXXXXX of heads/heads XX 9 then X/50 = .18, .XXXXXX = XX%), Repeat this mathematical procedure XXX heads/tails and tails/tails)
XXXXX 1
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Heads/heads (hh)
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16
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Head/XXXXX (XX)
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XX
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XXXXX/tails (XX)
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XX
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Ratio (hh:ht:tt)
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XX%:48%:20%
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XXXX might XX XXXX XX XXXX the XXXXX XXXX the XXXX XXXXXXXX XXXXXXXX XXXXXX more XXXXXXX XX XXX ratio from XXXXXXXX #X? (Hint: Consider that more XXXX XXXXXX XXXXXX XXXXXXXX.)
X XXXXXXXXXXX XXXXXXXX XX the XXXXXX size XXXXX out XXXXXX XXXXXXX a certain XXXXXX. XXXX XXXXXXX to results XXXX XXXXXXX for XXXXX XXXXXXXX XXXXXXXX XXX an XXXXXXXX probability figure XXX XXXX.
Cancer XXXX XXXXXXX
X. This question deals with XXXXXX XXX XXXX XXXXXXX. Begin XX going to XXX XXXXXXXXXXX://XXX.cancer.org/
XXXXX“XXXXXX A-X” in XXX upper left XXXXXX. The XXXX that comes up will XXXXXXX XXXXX XX XXXXXXXXXXX on breast XXXXXX, XXXXX and XXXXXX cancer, lung XXXXXX, XXXXXXXX cancer, and XXXX cancer. Review the XXXXXXXXXXX for XXXX these cancers.
Next, write an XXXXX that XXXXXXX discusses XXXX own risk XXXXXXX for XXXX XXXX of XXXXXX XXX steps you might XXXX XX decrease those risk factors. Be XXXX to address all XXXX XXXXX XX XXXXXX.
XXX do not have XX XXXXXXXX any XXXXXX XXXXXXXX information if you XX not wish XX do so. XXX XXX XXXXXX a fictional character XXX XXXXXXX XXX or her XXXX XXXXXXX XXXXXXX. XX sure XX XXXXXXX all five XXXXX XX XXXXXX.
Your XXXXXXXX must be at XXXXX 300 XXXXX in length.(Type XXXX response below)
A) XXXXXX XXXXXX:-
Risk XXXXXXX:-
X) XXXXXXXX XXXXXXX
X) XXX virtue of being overweight or XXXXX
3) Not XXXXXX children
4) XXX XX Birth control pills
XXXXX to decrease risk factors:-
X) XXX XX stay at a healthy XXXX XX XXXXX diet-XXXXXXX obesity.
2) XXXXXX XXXXXXXX on a regular interval to remain XXXXXXXXXX XXXXXX and XXX.
X) Avoid XXXXXXXX XXXXXXX or XXXXXX XXX XXXXXXX XXXXXXXX.
X) Rectal XXXXXX:-
Risk XXXXXXX:-
X) XXXXXXXXXXX XX f
XXXX, XXXXXXX diet
X) Smoking
3) Heavy alcohol use
4) XXXXXXXXXXX in age
XXXXX XX decrease risk factor:-
X) Avoiding XXXXXX XXXX by checking ones diet XXXXXXXX
X) XXXXXXX in XXXXXXX XXXXXXXX XXX physical XXXXXXX
3) XXXXXXXX intake of XXX and XXXXXXXXX XXXX
X) XXXXX excess XXXXXXX consumption and XXXX smoking
X) XXXX Cancer:-
Risk factors:-
X) Tobacco smoke
X) Exposure to XXXXX XXX or asbestos
X) XXXXXXXX to XXXXXX causing agent
4) XXXXXXX in XXXXXXXX XXXXX
XXXXX XX decrease XXXX XXXXXXX:-
X) XXXXXXX or XXXXXX tobacco intake or XXXXXX XXXX altogether
X) Avoid radon XXX and XXXXXXXX to cancer causing chemicals
X) Eat a XXXXXXX diet XXXXXX.
X) Prostate XXXXXX:-
XXXX XXXXXXX:-
X) XXX advancement XXX geography
2) Family history
3) XXXXXX in XXXX genes
Steps XXX XXXXXXXX XXXX factors:-
1) Diet XXX control XX weight
X) XX XXXXXXX XXXXXXXXX XXX to XXXXXX physically active
X) XXX XXXXXXXX prescribed XX XXXX XXXXXX XXX follow XXXXXX keenly
X) Skin Cancer:-
Risk factors:-
X) XXXXXXXX to XXXXXXXXXXX XXXXX and XXXXXXXXX
2) Advancement in age
X) XXXXXX low melanin XXXX
XXXXX to XXXXXXXX XXXX XXXXXXX:-
1) XXXXX XXX XX tanning beds and harmful chemicals.
2) XXXXXXX children from the sun by letting them stay indoors XX sunny XXXX.
X) Limit XXXX XXXXXXXX to XXXXXXXXXXX XXXX by XXXXXX XXXXXXX XXXXXXX XXXX, XXX XX umbrellas or XXXXXXXX XXXXX XXXX protects against XXX sun’s XXXX.
X) XXXXX XXXX XXXX XXXXXXXXX with a qualified physician.