Ans.
Albinism shows a genetic disorder, which is characterized by absence of coloration or pigmentation in individuals. It is an autosomal recessive disorder that transmits from parents to their offspring, when offspring receives both the mutated copies of gene responsible for albinism.
For a genetic disorder, dominant or wild type allele is represented by capital letter, such as 'A', while recessive or mutated allele is represented by small letter, 'a'. As 4th picture is representing male and female gametes with recessive alleles (a) , the resulting zygote will have both recessive alleles for albinism (aa), '4th zygote will develop into an albino child.'
Answer:
Antipsychotic drugs have been developed to target both the positive symptoms AND the negative symptoms of schizophrenia by targeting both dopamine and serotonin receptors in the brain.
Explanation:
Schizophrenia is a disorder that affects the ability of a person to feel things, think and behave accordingly. There are several symptoms of schizophrenia like hallucinations, social isolation, responding inappropriately to surroundings and stimulus, being emotionally vulnerable, in severe cases an individual may try to harm themselves and become extremely aggressive. Dopamine and serotonin both play vital roles in schizophrenia. It was detected that dopamine levels were low in patients suffering from schizophrenia. Thus, antipsychotic drugs were developed which affected the receptors of dopamine and serotonin, sequentially reducing symptoms and effects of schizophrenia.
Learn more about Schizophrenia here:
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Answer:
III-6
Explanation:
Obligate carriers, or obligate heterozygotes, are those individuals that may be unaffected clinically, but must possess a copy of the mutant gene. For autosomal recessive conditions, obligate carriers can be the offspring of a parental mating of two carriers (50% of offspring will also be carriers). They can also be produced by a parental mating of a carrier by an affected individual (50% of offspring will be carriers).
Answer:
A) Spore capsules
Explanation:
Ferns produce spore capsules contained in the sporangium (plural: sporangia), a structure localized on the undersides of the leaves. Moreover, the sporangia are borne in clusters known as sori (singular sorus). The spores are single reproductive cells that, when mature, are released from the sporangium to germinate on soil and produce new ferns. In a fern sporangium, the maximum number of spores is 64, although this number depends on the species.
Answer: it is probably a plant cell because it has a cell wall and chloroplasts.
