Melanin conveys some UV protection
Answer:
The correct answer is: she won't have children with the disease because for this particular condition to appear, both parents need to have the trait and she doesn't have it.
Explanation:
Sickle Cell Disease is a condition that <u>affects the red blood cells,</u> since the hemoglobin (the protein inside the red blood cells that carry oxygen and carbon dioxide) is abnormal. This condition <u>produces anemia</u> and may lead to higher chances of bacterial infection and strokes.
Sickle Cell Disease is a genetic condition that is <u>inherited in a </u><u>recessive</u><u> way</u>: this means that for someone to have it, both parents must have the trait for the condition.
If the dogs are different breeds, their activity levels could be different because of their breed and not the caffeine. The correct option is A.
<h3>Reliability of experiments</h3>
In order for the outcomes of scientific experiments to be reliable, constant variables should be kept constant.
In the illustrated experiments, the breed and age of the experimental dogs have to be the same. It is one of the variables that have to be kept constant throughout the experiment.
If the dogs are different breeds, their activity levels could be different because of their breed and not the caffeine. The same thing is applicable to different ages.
Thus, evaluating this variable and doing right by it will ensure reliability.
More on the reliability of results can be found here: brainly.com/question/1873979
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Answer:
Huntington disease is a dominant autosomic disease so it presents either in heterozygosity (Aa) or in homofzigosity (AA)
observing the pedigree, the two parents have the Aa genotype so by making the punnet's square we have as possible genotypes: AA, Aa, Aa, aa. So the chance to get the disease is 25%
A spirogyra is a filamentous chlorophyte green algae. A well-labelled diagram of spirogyra is attached.
Explanation:
The presence of hellical or spiral arrangement of chloroplast makes it from the order Zygnematales of Zygnematacae family of Algae.
It is commonly found in fresh and stagnant water.
A mucilaginous outer covering makes it slimy in texture.
It is a green algae hence undergo photosynthesis and is autotroph.
It can reproduce both sexually and asexually.