The answer would be A. the arrangement of DnA
The correct answer is: John who has no genetic predisposition and goes dancing with his friends twice per week.
Alzheimer's disease is a neurodegenerative disease and the most common type of dementia. Patients suffering from this type of dementia exhibit problems with memory, cognition and behaviour. One of Alzheimer's risk factors is family history and genetic predisposition. Several genes have been found to increase the risk of developing Alzheimer's. Physical activity, such as regular dancing for example, stimulates the mind and can protect from dementia. Therefore, John is the least likely to develop Alzheimer's disease.
<span>A heterozygous tall pea plant is crossed with a short plant. The probability that an F1 plant will be tall is 1/2
In short, Your Answer would be 1/2 or 50%
Hope this helps!</span>
Answer:
Phenotype: 2:2 or 1:1 / Genotype: 2:2 or 1:1 / 50% probability for chestnut color
Explanation:
If we put the two horses' genotypes in a Punnett square:
<u> B b</u>
<u>b</u> Bb bb
<u>b</u> Bb bb
The phenotype is describing the ending color of the offspring, where 2 of the 4 will be brown (Bb) and 2 of the 4 will be chestnut (bb), resulting in a 2:2 ratio. Genotype only refers to the alleles, where 2 of the 4 will be hybrid (Bb) and 2 of the 4 will be homozygous recessive (bb), again resulting in a 2:2 ratio. There is only a 50% chance that the offspring's phenotype will be chestnut color (bb) because the chestnut allele is recessive.
Typically, the nucleus is the most prominent organelle in a cell. Eukaryotic cells have a true nucleus, which means the cell's DNA is surrounded by a membrane. Therefore, the nucleus houses the cell's DNA and directs the synthesis of proteins and ribosomes, the cellular organelles responsible for protein synthesis.