Answer:
Option E, Crossing Over
Explanation:
In the process of crossing over, a chromosome is replicated to produce two sister chromatids.
Sister chromatids have genes that are divided and shared with the offspring in equal number. In this way genetic traits are exchanged and the offspring has a new set of genes.
This process takes place at the prophase stage of cell division.
Without crossing over, gene linkage is incomplete.
Hence , option E is correct
Answer:
recessive
Explanation:
Alleles are the alternating forms of a gene and may be dominant or recessive. A recessive allele is the one that is not expressed in the presence of the dominant allele. Therefore, the expression of the recessive alleles occurs only in homozygous recessive genotype.
The recessive allele code for a non-functional or less functional protein which is not observed in the presence of fully functional protein encoded by a dominant allele in a heterozygous state. However, in homozygous recessive genotype, when the dominant allele is not present to code the functional protein, the non-functional proteins are apparent and the recessive allele is said to be expressed.
uterus It passes through the fallopian tube into the uterus, where it attaches to the uterine wall. The placenta, which will nourish the baby, also starts to form.
Enzymes are biological catalysts which increase the rate of biochemical reactions without undergoing any change themselves. They bind with the substrate to form a enzyme substrate complex leding to the formation of product releasing free enzyme.
Enzymes have an optimum pH at which they show their maximum activity. Any change in the pH effects the enzyme and the enzymatic reaction. Most of the enzymes are functional at the neutral pH of 7 in the cell cytoplasm with a few exceptions. An acidic environment in the cell, changes the tertiary structure of the enzymes and the bonds of the enzymes are weakened. Thus, preventing the substrate binding to the active site of the enzyme and inhibiting catalysis. This is due to the change in the structure of the active site leading to the lack of electrostatic attraction between the enzyme and the substrate.
