Double fertilization happens when one sperm cell wires with the egg to create a zygote, and the other sperm cell wires with the two polar cores to make the endosperm.
To answer the above:
Once double fertilization occurs in plants, the zygote is diploid and the endosperm is <span>triploid.</span>
Answer:
A)
Explanation:
Because animals can be largely divided into three groups based on the type of symmetry of their body plan: radially symmetrical, bilaterally symmetrical, and asymmetrical.
Answer:
Plants loose their leaves in winter due to following reasons: The plants of these types are called deciduous plants. The leaves of these plants contain a chemical called Chlorophyll. Chlorophyll in the presence of sunlight make food for plant and the process is called photosynthesis.
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Answer:
Part A: Both the parents must be the carrier of the diseases that is, Cc.
Part B: one out of four or 25 percent chances are there that their offspring would have cystic fibrosis.
As cystic fibrosis is an autosomal recessive disorder, the individual needs to carry two copies of the recessive allele that is, homozygous recessive (cc).
It is stated that neither of the parents has the disorder but their offspring show the phenotype, then both the parents must be the carrier of the disorder that is, both must heterozygous (Cc).
The offspring produces by this cross can have three types of genotypes CC, Cc, cc in 1:2:1.
Thus, only one out of four would show the disease.
The regulation of blood sugar is accomplished by the organ called the Pancreas. It secrets insulin, a hormone regulator. Insulin enables the sugar to get out of the blood and into the cells where it is needed for the cells to function. And also the liver removes sugar from the body by turning it into glycogen, another hormone regulator which body burns as energy.
