Answer:
a. Genotype of the parents are; Rr and rr
b. Please find the explanation to A below
Explanation:
This question involves a single gene that codes for flower color in a plant. The allele for red flower (R) is dominant over the allele for white flower (r). This means that a plant that is heterozygous for flower color (Rr) will be red.
In a cross between a plant with red flowers and white flowers, the phenotype of the offsprings is represented as: 37 plants with red flowers and 41 plants with white flowers. Observing from this number, one would realize that the phenotype ratio is equivalent to 1:1. This phenotypic ratio is only possible when the parent with red flower is heterozygous for the gene i.e. Rr. Hence, the genotype of the parents are: Rr and rr.
b) If one were to cross Rr (red flower) × rr (white flower), the phenotypic ratio of red to white offsprings will be 1:1. Hence, judging from the ratio got from the cross of the two parents above (1:1), the parental genotypes are Rr and rr.
It would take 4 years for Alpha Centari's light to reach Earth. hope this helps!
Answer: D
Explanation:
The terms that the student uses - class, order, and family - are all words that are used to describe species. Taxonomy is the science of naming, describing and classifying organisms and includes all plants, animals and microorganisms of the world.
Answer AND Explanation:
Classification is the orderly arrangement of organisms into groups based on their similarities. The modern method of classifying organisms was devised by Carolus Linnaeus. The characteristics used include:
- Anatomical structure- whether the organism is prokaryotic or eukaryotic
- Biological processes for example photosynthesis in plants and production of hormones.
- Cell structure
- Body type- unicellular or multicellular
- Mode of nutrition- heterotrophic or autotrophic
Answer:
*Black means has Polydactyly, white means does not. The life expectancy for people with polydactyly is the same as a normal person without the disorder. If the extra finger or toe is removed, then most children will have full range of motion with their other fingers and toes.
Explanation:
Got this from google. Hope this helps :))
