Lipid Bilayer

Lipids in cells have three main functions: energy storage, signal transduction and forming the matrix of biological membranes. Lipid membrane have asymmetric distribution of lipids between two leaflets. Cell membrane composed of polar lipids that self assemble to form bilayer. Thus, cell membrane forms asymmetric structure which means two sides of membrane are functionally and […]

Heterochromatin and Euchromatin

Heterochromatin and euchromatin are two types of chromatin structure. Heterochromatin is defined as densely packed chromatin and euchromatin is defined as loosely packed chromatin. The condensed chromatin structure indicates inactive transcription. This is heterochromatin structure. Methylation stop the gene expression as it blocks the promoter site from binding to transcription factors. Therefore, it indicates inactive […]

Advantages of biodiversity

  Overview: Diversity in biology is defined as the number of species or organisms in an environment. Advantages of diversity: 1. More biological diversity means more niches and roles are played by each organisms that helps to balance the ecosystem. For example: more species diversity results in healthy ecosystems as it can recover from various […]

What happens to your body when you are dehydrated?

When there is excessive loss of water from extracellular fluid then osmotic pressure in extracellular fluid rises. Extracellular fluid means fluid present outside the cells. Osmotic pressure is defined as the pressure applied to solution to stop movement of solvent molecules through semipermeable membrane. Osmosis is the movement of solvent (water) molecules from high solute […]

Two Phases Of Photosynthesis

Photosynthesis process used by plants to convert light energy from sunlight into sugar plant energy. The two phases of photosynthesis are: 1) Light reactions also called as photochemical reactions is the first stage of photosynthesis that converts the light energy into sugar. 2) Calvin Cycle or light-independent reaction or dark reactions or carbon fixation reactions […]

In pea plants, flowers are either white or purple; the purple color is produced by pigments called anthocyanins. The production of anthocyanins is a two-step process: the first is controlled by the C gene and the second by the P gene. Both genes must produce functional proteins for anthocyanin to be expressed. For each gene, the dominant (C and P) alleles produce functional proteins. You cross two pea plants, each with the genotype CcPp. What proportion of their offspring will have white flowers?

Answer: The proportion of their offspring will have white flowers is 7/16 Explanation: The production of anthocyanins is controlled by dominant C and P gene. Thus, absence of one or both dominant C or P results in white flowers. According the cross that is shown in image, the answer is 7/16