Answer:
1/4
Explanation:
Cystic fibrosis is a recessive disorder and therefore, is expressed only in homozygous recessive genotype. Let's assume that the allele "c" is responsible for the disease in the homozygous state. Since the couple already has a child with cystic fibrosis (cc), they both are heterozygous carriers for the disease.
The genotype of male and female each is "Cc". A cross between Cc x Cc gives progeny in the following phenotype ratio=1/4 diseased: 1/2 normal carriers: 1/4 normal. Therefore, the probability of getting a diseased child for them is 1/4.
Answer:
Earth science is a branch of the physical sciences which is a part of the natural sciences
Answer:
1: Organisms that make energy are called producers.
Producers are the autotrophic or chemotrophic organisms which are capable of synthesizing their food either by photosynthesis or by chemosynthesis. In the process of photosynthesis organisms use sunlight as a source of energy to convert water and carbon dioxide into carbohydrates and oxygen. Also some simple organisms use chemical energy obtained by chemical inorganic substances and convert them as organic chemical substances to obtain them as food.
2: A decomposer recycles matter back into the food web and biogeochemical cycles.
A decomposer is an organic which feed upon dead decaying organic matter generated after the death of plants and animals. This process results in the simplification of organic matter into simpler substances which are again absorbed by the plants through soil.
3. The sun is the source of energy. The light energy from sun is converted into chemical energy in the form of food by the producers like plants.
4. The autotrophs are found at the base of a food pyramid.
The autotrophs are called as producers because they are capable of synthesizing their own food by the process of photosynthesis . The diversity of producers in nature is more as compared to other organisms therefore, it lies at the base of the food chain.
Explanation:
Photosynthesis is the process where most autotrophs use photons from the sun to make sugar for energy
