Answer:
Variation traits and natural selection.
Explanation:
Darwin stated that all species of organisms arise and develop through natural selection and inheritance of variations
In natural selection, survival was for the fittest. In order for an organism to survive . It had to develop new traits to adapt to its environment .
The variation increases its ability to compete, survive and reproduce. Through reproduction the desires trait is passed down making the organism to be considered fit.
Answer:
b prostate gland
Explanation:
The prostate gland's main function is to secrete prostate fluid, one of the components of semen. The prostate is also a common site of cancer.
Answer:
Number 4
Explanation:
4. It conveys the right branch of the atriventricular bundle.
This part of the heart is found in the right ventricle and it is important because it carries part of the right bundle branch of the atriventricular bundle of the conduction system of the heart to the anterior papillary muscle and it is also used by radiologists etc to easily identify the right ventricle.
Answer:
A
Explanation:
Arrows show the flow of energy after photosynthesis takes place
Answer:
Example of the Epistasis in plants is observed in the "summer squash".
Explanation:
Epistasis refers to a gene interaction in which one gene is masked by the other gene and affect the phenotype. The gene which masks the other gene is known as the epistatic gene and the gene which is being masked is known as the hypostatic gene.
The epistasis gene effect is observed in which more than one gene controls the same phenotype.
The example can be observed in the summer squash fruits in which more than one gene controls the color of the fruit.
The summer squash can be controlled by the white allele (W), Yellow allele (G) and the green by the recessive form of the w and g. If the W gene is present than it masks the other allele and thus white colour becomes dominant and is considered the case of the dominant epistasis.
