"The number of chromosomes present in a diploid cell doubles for each generation because there are two parent" is the one among the two statements that <span>is the best explanation for why the chromosome numbers above are all even. The correct option among the two options that are given in the question is the second option or option "B". </span>
Answer:
Crossing over is a process that happens between homologous chromosomes in order to increase genetic diversity. During crossing over, part of one chromosome is exchanged with another. The result is a hybrid chromosome with a unique pattern of genetic material.Crossing-over is the exchange of genetic material between homologous chromosomes. It results in new combinations of genes on each chromosome. When cells divide during meiosis, homologous chromosomes are randomly distributed to daughter cells, and different chromosomes segregate independently of each other.
Explanation:
Answer:
m=(y2-y1)/(x2-x1)
m=(2-0)/(0-(-2))
m=2/(0+2)
m=2/2
m=1 ==> Gradient of graph
x-int: (-2, 0)
y-int: (0, 2)
Explanation:
m=(y2-y1)/(x2-x1)
m=(2-0)/(0-(-2))
m=2/(0+2)
m=2/2
m=1 ==> Gradient of graph
x-int: (-2, 0) ==> When y=0
y-int: (0, 2) ==> When x=0
Answer:
The Doppler red-shift of light observed from distant stars and galaxies gives evidence that the universe is expanding (moving away from a central point). This allows for Big Bang Theory, because after a “bang” occurs all of the matter moves away from the point of origin.
Explanation:
Hope this help!
Answer:
Cancer is formed when there are mutations in a number of genes.
Explanation:
Malignant tumors are gene diseases which do not mean that cancer is necessarily an inherited disease (only in 5-10% of cases the cancer is inherited) because the vast majority of other tumors are the result of somatic, ie secondary, mutations that lead to malignant transformation.
Only 2% of human diseases are monogenic (caused by a change in one gene). The remaining 98% of the disease is either polygenic (caused by a change in several genes at the same time) or epigenetic (caused by non-genetic or post-genetic disorders of cellular molecules).
