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Amiraneli [1.4K]
4 years ago
6

BIOLOGY HELP

Biology
1 answer:
yuradex [85]4 years ago
8 0

Answer:

100%

Explanation:

The probability is shown by the punnet square below. While the genotype of 50% of the offspring may be heterozygous, since the allele for straight hair is dominant over that of curly hair, their phenotypes too will be of straight hair similar to the homozygous dominant offspring.

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In humans, the sickle-cell trait is caused by a single defective allele, but sickle-cell disease only occurs in individuals that
In-s [12.5K]

Answer: The probability that the two children have the disease is 1/16 or 6,25%

Explanation: If the disease only occurs in homozygous individuals and the parents have the trait but not the disease that means is a recesive allele and the parents are heterozygous for this trait.

According to proportions stablished by Mendel, when there is a cross between 2 heterozygous (Ss x Ss) indivdials the probability to obtain a homozygous recesive (ss) descendant is 25% or 1/4 as shown in punnet square below:

\left[\begin{array}{ccc}&S&s\\S&SS&Ss\\s&Ss&ss\end{array}\right]

Taking into account that the condition of the first kid does not imply the condition for the second, it should be analyzed as 2 independent events.

1. First kid has 1/4 of probability have the dissease as shown in punnet square

2. For a second birth, child has the 25% chance to have the disease

The probability that both events to happen is the product of each event probabilty:  

p = 1/4 * 1/4 = 1/16 or 6,25%

5 0
3 years ago
A local town has a problem with too many mice running around. In response to this they start a war on the mice, and get neighbor
Molodets [167]

Answer:

See the answer below

Explanation:

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Answer:

Explanation:

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<span>A sense of failure created in parents and in their children.

Hope this is right.
</span>
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