Answer:
In mendelian inheritance, the alleles for a gene show normal dominant-recessive relationship. Chromosomes also show crossover due to which new random combination of traits is possible in the offspring. This crossover takes place between homologous chromosomes during meiosis I.
Organellar DNA like the ones present in mitochondria and chloroplast do not follow mendelian inheritance because unlike nuclear chromosomes they do not have cross over events. There is no orderly segregation of alleles during meiosis. Traits controlled by them are usually inherited as it is and usually it is from the maternal parent because paternal gamete like sperm does not contain mitochondria.
False. They form a V formation so that it will lower their heart rate and make it easier to go longer distances. And when they are in a V formation, it results in wind resistance.
Phloem is the food conducting tissue that has a two-way flow.
Explanation:
Plants prepare food on their own and plants also have conductive cells that carry out transportation process. Plants are divided into two types based on their conductive system i.) vascular plants ii.) non vascular plants.
Vascular plants are those plants which have special conductive cells called phloem and xylem.
Xylem transports water from roots of the plants to other parts of plants and also provides mechanical support to plant. It is uni-directional.
Phloem is the food conducting tissue that transports food to plant and also have bi-directional movement.
Answer:
Cornea
Explanation:
The first part of eye through which light enters into the eyes is cornea. Cornea comes in front of the pupil and iris and is made up of transparent layer. It is a curved structure just like a normal glass lenses and hence is able to focus light on retina. It also protects the eyes. Cornea along with anterior chamber is responsible for 67 percent of the optical power of eye and sends the light towards the pupil.
