<span>Answer
1. electrical signal travels toward the heart
2. signal by the nodes in the atrium</span>
3. the atria contract<span>
</span>4. signal received by the atrioventricular node
5. signal transferred to the ventricles
6. the ventricles contract
Heart has a pacemaker that will continually send a signal. The primary site of the pacemaker is at the sinoatrial node, on the top right atrium. This node will send a signal to atria (which will cause it to contract) and to the atrioventricular node.
Atrioventricular node located between atrium and ventricle. It will send the signal to the ventricle(by the bundle of his) and cause it to contract.
Yo I have no idea IMAO, maybe because it’s ugly and it has no skin?
The chlorophyll in plants is directly responsible for absorbing light energy. It uses the absorption of light for energy to synthesize carbs from CO2 and H2O!
Answer:
The options are missing, the options are:
(a) the ratio of round to wrinkled would have been unpredictable and change each generation
(b) all of the seeds would have displayed the dominant trait, round
(c) it would have yielded the same results as he originally saw
(d) an inversed 3:1 ratio, wrinkled:round
(e) no offspring would have been produced, so there would be no ratio
The correct answer is A
Explanation:
Mendel proposed that alleles of a gene separates into gametes during gamete formation. He called this Law of Segregation. He also stated that in an heterozygous organism, each different allele separates into gamete will equal frequency. He was able to predict the phenotypic ratio of 3:1 for the F2 generation using this principle and it proved right.
If his principle of segregation were false, it would have been impossible to predict the phenotypic outcome of the offsprings i.e. in what proportion each trait will occur. This unpredictability would have changed the ratio of the offsprings in each generation. For example, in the case of seed shape gene, if the round and wrinked alleles didn't separate in equal frequencies, it would be impossible to come up with a prediction of 3:1 ratio of round to wrinked seeds.
