The answer is; 3:1
This is derived by dividing the number of purple flowers with that of white flowers (or vice versa);
669/221 = 3.02714 which is approximately 3 (because we can only have whole plants). Based on this fact, it can be postulated that the Purple flower allele is dominant to that of white flower. (The purple flowers represent the Homozygous dominant and heterozygous population while the white flowers are the homozygous recessive population)
Answer:
i had the answer and i lost it when i think of it ill come back
Explanation:
Answer:
The nervous system comprises of the brain, sensory organs and spinal cord. The nerves of the body is used to communicate with all the parts of the body.
The brain and the spinal cord is known as the control system of the body which is helps in taking decisions.
The central nervous system helps in maintaining balance of the body, processing the information and based on that response is generated.
The signals from the brain is sent to various parts of the body and from body the signals are sent to the brain for processing.
Hence, the nervous system helps in sensory, motor and integration part of the body.
Answer:
The best evidence for the three domain system is
Sensitivity to Antibiotics
Explanation:
The three domains of life includes :
Archaea - oldest known domain, ancient forms of bacteria.
Bacteria - all other bacteria that are not included in the Archaea domain.
Eukarya - all the organisms that are eukaryotic or contain membrane-bound organelles and nuclei.
Types of evidences for the three domain system are:
1) differences in the sequences of nucleotides in the cell's robosomal RNAs (rRNA)
2) the cells's membrane lipid structure.
3) its sensitivity to antibiotics.
<u>mutation.</u>
Melissa's child was born with an extra chromosome, resulting in down syndrome. this is an example of <u>mutation</u>.
<h3>What does mutation entail?</h3>
- A mutation is a change to an organism's DNA sequence.
- Errors in DNA replication during cell division, exposure to mutagens, or viral infection can all cause mutations.
<h3>Describe the Down syndrome.</h3>
- An extra chromosome causes the disorder known as Down syndrome.
- In the body, chromosomes are discrete "packages" of genes.
- They control how a baby's body develops during pregnancy and after birth, determining how it will look and work.
- A newborn typically has 46 chromosomes.
- One of these chromosomes, chromosome 21, has an extra copy in infants with Down syndrome.
- Trisomy is the medical word for having an extra copy of a chromosome.
- Trisomy 21 is another term used to describe Down syndrome.
- The newborn may experience difficulties with their mental and physical development as a result of this additional copy, which alters how their body and brain grow.
<h3>Is Down syndrome curable?</h3>
- Down syndrome is incurable.
- Early intervention programs can aid in skill development.
- Speech, physical, occupational, and/or educational therapy are a few examples.
- Many people with Down syndrome lead happy, fruitful lives with assistance and treatment.
To learn more about down's syndrome visit:
brainly.com/question/6958863
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