Answer: When a heterozygous guinea pig (Rr) is crossed with a homozygous guinea pig (aa), the possible genotype of the offspring contains Rr and rr. Each genotype has a 50% chance of occurring in a specific generation. Nine offspring can have smooth coats as heterozygous (Rr) and homozygous (rr) parents indicate low chromosome recombination frequency (in this crossover). Genes close together on the chromosome indicate low recombination; thus, the crossover would rarely happen.
All of the following structures are found in both plant and animals
cells. Plant and animal cells all have ribosomes, mitochondria, nucleus,
cell membrane, as well as cytoplasm in common. The only thing that
plant cells have, that animals cells do not, is a cell wall.
D. <span>The stomata will close until enough water is lost.</span>
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Producers provide primary consumers with the chemical energy they need.
Explanation:
- Producers lie at the first trophic level of the food chain.
- The producers are the green plant which are able to convert the light energy of the sun into chemical energy.
- Thus, they are the key in directing the energy from the ultimate source to the food chain.
- Primary consumers comprise of the herbivore or omnivores which feed on the plants and plant product.
- The only way they could get energy is from the plant directly or indirectly as they cannot photosynthesize.
- Thus. we can conclude that producers provide primary consumers with the chemical energy they need.