Dehydration because animals can only live so long with water
Las acciones humanas están alterando el delicado equilibrio ambiental. En consecuencia, yo recomendaría aplicar diferentes acciones a nivel individual para preservar nuestro planeta.
La contaminación de los ecosistemas terrestres y acuáticos está poniendo en grave peligro los ecosistemas del planeta, con lo cual es imperativo disminuir los niveles de contaminación.
Algunas de las acciones necesarias que pueden ser aplicadas a nivel individual con el fin de proteger nuestro planeta son la reducción de la contaminación mediante el ahorro de energía y la conservación de recursos naturales.
- La compra de productos ecológicos, la reducción del uso de materiales no biodegradables (por ejemplo, plásticos), el uso de medios de transporte público o la bicicleta, representan medidas contendientes a diminuir los niveles de contaminación.
- El reciclado de materiales puede también ayudar a ahorrar energía, con lo cual evitando la contaminación que resulta del proceso industrial de fabricación de manufacturas.
- Disminuir el uso de agua también es una medida para proteger nuestro planeta, ya que los organismos productores en un ecosistema (por ejemplo, las plantas) necesitan del agua para capturar y almacenar del carbono durante la fotosíntesis.
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The correct answer is option B. Genotype AA, phenotype-Unaffected.
The cystic fibrosis is a condition caused by the inheritance of the two recessive allele, It is an autosomal recessive disease.
In the given case, the parents are carriers, and the carriers are always heterozygotes. Hence, the phenotype of the both parent should be Aa. A possible cross of the parents is shown in the figure below.
In case, the progeny have a single dominant trait, the child would not be affected, but will be a carrier and can pass the disease to offspring. In case, the child inherit both the dominant allele (homozygous dominant) from the parents, then he/she would be unaffected. In case, the phenotype of the child is homozygous recessive then it would be affected.
Answer:
C. The green allele is recessive to the yellow allele
Explanation:
Complete dominance occurs when one gene variant or allele referred to as the 'dominant allele' completely masks the expression of another allele referred to as the 'recessive allele' in heterozygous individuals, i.e., in individuals carrying one copy of the dominant allele and one copy of the recessive allele for a particular locus/gene (whereas homo-zygous individuals carry the same alleles for a given locus/gene). Mendel crossed pure lines of pea plants, i.e., homo-zygous lines for different traits such as seed color (yellow and green) and seed shape (round and wrinkled). In this case, the parental cross was YY x yy, where the 'Y' allele is dominant and encodes for yellow seed color, and the 'y' allele is recessive and encodes for green seed color. From this cross, Mendel obtained a hybrid F1 (i.e., all progeny was heterozygous with genotype Yy). An expected 3:1 ratio as observed in this case (6,022 yellow and 2,001 green seed >> 3:1 ratio) is characteristic of the progeny that results from mating between F1 heterozygous parents, where each parent has one dominant allele and one recessive allele, i.e., F1 parental cross: Yy x Yy >> F2: 1/4 YY (yellow color); 1/2 Yy (yellow color); 1/4 (green color) >> 3:1 ratio of yellow to green seeds.
