Answer:
1/3
Explanation:
Let's assume that the allele "P" imparts purple phenotype to flowers while the allele "p" gives white phenotype. The self-fertilization of purple-flowered parent plants gave purple and white progeny in almost 3:1 (28:10) ratio. This means that the parent plants were heterozygous and the genotype of each was "Pp".
A cross between Pp and Pp produces progeny in the following genotype ratio=
1/4 PP: 1/2 Pp: 1/2 pp
So, out of total 3/4 purple progeny, 1/3 is homozygous for the purple allele (PP) while the rest 2/3 is heterozygous dominant.
An exact copy or model of something one on a smaller scale
Answer:
The correct answer is B energy released from chemical reaction is used to directly phosphorylate ADP.
Explanation:
When ATP molecule is formed by the phosphorylation of ADP but without the involvement of oxidative phosphorylation is known as substrate level phosphorylation.
Example The conversion of 1,3 bis phosphoglycerate to 3 phospho glycerate by the help of phospho glycerate kinase is an example of substrate level phosphorylation .
In this reaction one phosphate moiety is being splited from 1,3 bis phosphoglycerate,the splited phosphate moiety then reacts with ADP to generate ATP.
Answer:
The two major differences lies in the function and support system.
Explanation:
The two major differences between an endocrine and an exocrine system are as follows –
a) An endocrine system releases its produce (hormones) into the connective tissue i.e blood while the exocrine system releases hormones directly into the ducts so that it could reach the targeted tissue directly.
For example – the Adrenal gland is an endocrine gland that secretes adrenaline directly into the blood. The salivary gland is an exocrine gland that releases its produce into the collecting duct leading to mouth. However, Pancreas is both endocrine and exocrine gland.
b) The endocrine system cannot work alone therefore it works in coordination with the nervous system to control actions and balance the body. However, the exocrine system works independently
.