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iren2701 [21]
3 years ago
14

20 POINTS - MONOHYBRID CROSS

Biology
2 answers:
Brrunno [24]3 years ago
8 0
Eye color
Father has brown eyes and is heterozygous (Bb).
Mother has Brown eyes and is heterozygous (Bb).
Check the attached doc for the punnet square;
Resulting offspring;
Genotype Ratio;  1 BB to 2Bb to 1 bb
Phenotype Ratio; 3 Brown eyes to 1 blue Eyes
Therefore; The chance of this couple having a child with blue eyes will be;
 = 1/4 or a 25% chance
Download docx
LiRa [457]3 years ago
6 0

Answer:

25%

Explanation:

if the parents are both heterozygous then you emidiatly have to know 75%  or 25% and since both parents have brown eyes than the possibility of the child having blue eyes is 25%

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Answer:

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6 0
3 years ago
A student analyzed ears of corn that demonstrated two traits in the F2 kernels, purple or white colors and smooth or wrinkled sh
Sunny_sXe [5.5K]
The answer is purple and smooth.

It is known that the in dihybrid cross (a cross between two different traits), the phenotypic ratio between the offspring of two heterozygous parents in the F2 generation is 9:3:3:1.

<span>purple and smooth = 75                (</span><span>≈ 9 </span><span>· 8)</span>

<span>white and smooth = 28                  (</span><span>≈ 3 </span><span>· 8)</span>

<span>purple and wrinkled = 24               (= 3 </span><span>· 8)</span>

<span>white and wrinkled = 8                   (= 1 </span><span>· 8)</span>

<span>
</span>

So, the ratio between the offspring is close to 9:3:3:1 in F2 generation.


This means, that the only heterozygotes are present in the F1 generation, and they must be purple and smooth.

3 0
3 years ago
Read 2 more answers
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