What are the two alleles of the seed color trait being considered here?
Seed color is governed by a single gene with two alleles. The yellow-seed allele is dominant and the green-seed allele is recessive.
When a yellow seeded pea plant with the genotype YY produces gametes what will be the genotype S of the gametes?
When a yellow-seeded pea plant with the genotype Yy produces gametes, what will be the genotype(s) of the gametes? Half will be Y, and half will be y. generation, which of the following must be true? The two alleles of a pair separate in gamete formation.
Which explanation of the inheritance of shape in pea plants is supported by the Punnett square?
What is the best explanation for this pattern of inheritance? This is incomplete dominance, where both alleles are expressed at the same time, giving an intermediate phenotype. Mendel studied seven traits in pea plants.
Can an AA marry an SS?
An AA genotype person marrying an SS can only result in AS children. Someone with the genotype AS should only marry someone with the genotype AA because if AS marries another AS there’s one out of 4 chances (AS, AS, AA and SS) that they will have a child with the sickle-cell disease.
Can As marry as?
Compatible genotypes for marriage are: AA marries an AS. You’ll end up with kids with AA and AS which is good. But sometimes if you’re not lucky all the kids will be AS which limits their choice of partner. AS and AS should not marry, there is every chance of having a child with SS.
Which genotype is more prone to malaria?
Children with genotype AA (92.3%) were more susceptible to malaria parasite than AS (5.1%) and SS (2.6%). The association of haemoglobin genotype with malaria was highly significant (p<0.001).
Can AS and AS genotype give birth to AA?
The probability of having AA and SS is 0.25 but AS is 0.5. There are no guarantee that any of your child will be AA or AS, they could all be SS which is really dangerous.
Can 2 people get married?
The two AS genotype partners can decide to marry and have no children. Or they may decide to marry, have no children and adopt children instead. The end goal is that if prenatal testing confirms the child will have SCD, a decision may be taken to end the pregnancy at that stage.
What blood type is resistant to malaria?
Studies have reported association of ABO blood group to resistance, susceptibility, and severity of P. falciparum malaria infection. Individuals with blood group “A” have been found to be highly susceptible to falciparum malaria whereas blood group “O” is said to confer protection against complicated cases.
Which blood type is prone to malaria?
Blood type O is common where malaria is common. A protein produced by some strains of the malaria parasite can cause red blood cells, especially in blood group A individuals, to form clumps, thereby increasing the severity of disease, according to research just published.
Who is prone to malaria?
People who are heavily exposed to the bites of mosquitoes infected with P. falciparum are most at risk of dying from malaria. People who have little or no immunity to malaria, such as young children and pregnant women or travelers coming from areas with no malaria, are more likely to become very sick and die.
What are the symptoms of malaria and typhoid?
Signs and symptoms include:
- Fever that starts low and increases daily, possibly reaching as high as 104.9 F (40.5 C)
- Weakness and fatigue.
- Muscle aches.
- Dry cough.
- Loss of appetite and weight loss.
- Stomach pain.
What country has the most malaria?
Most malaria cases and deaths occur in sub-Saharan Africa. However, the WHO regions of South-East Asia, Eastern Mediterranean, Western Pacific, and the Americas are also at risk. Some population groups are at considerably higher risk of contracting malaria, and developing severe disease, than others.
Which body part does malaria affect the most?
Beyond the brain, the lungs are the most affected organ in severe malaria. Lung dysfunction occurs in 20% of all cases of adults with falciparum  or vivax  severe malaria.
Why is there no malaria in Europe?
Malaria was eradicated from Europe in the 1970s through a combination of insecticide spraying, drug therapy and environmental engineering. Since then, it has been mostly imported into the continent by international travellers and immigrants from endemic regions.