Answer:
The correct answer will be-
1. Homologous recombination- crossing over
2. Occur-during pachytene of meiosis I of gamete formation.
Explanation:
The basis of diversity of organism present on earth lies in the sexual mode of reproduction possessed by the organism to produce offspring. The sex cells involved in the reproduction are formed by a process called meiosis.
During the formation of gametes, at the pachytene stage of meiosis I take place a mechanistically conserved process which leads to the exchange of DNA segment between non-sister chromatids called crossing over through a process known as homologous recombination.
This exchange of genetic material in the homologous chromosomes increase the genetic diversity of the organism on the earth.
Answer:
Erythema nodosum is characterized by tender, red bumps, usually found symmetrically on the shins. Up to 55 percent of cases have no clear identifiable cause. Sometimes, erythema nodosum is not a separate disease. Rather, it is a sign of some other infection, disease, or of a sensitivity to a drug.
Answer:
Influenza (The Flu)
Explanation:
Influenza (the flu virus) is a real-life example of natural selection that is most evident during an annual time period when the influenza virus infection peaks. The repeated or cyclical nature of flu outbreaks is caused by the natural selection of the virus for traits that allow it to evade the immune system and replicate, a process that actually results in new distinct strains of influenza virus.
Yes, Human DNA have two types of chromosomes that are Autosome and Allosomes/ Heterosomes
Human Chromosomes are Found:
Before cell division, chromosomes are widely distributed and challenging to find. The chromosomes may be observed clearly during cell division, photographed, and their morphology, size, and shape analyzed. Autosomes and sex chromosomes are two groups of chromosomal types. Below is an explanation of these types:
The autosomes
The structures that house the genetic material are called autosomes. They do not include details about reproduction and sex identification. The male and female species of humans are the same in both sexes. In humans, there are 46 (2n) chromosomes. There are 44 pairs of autosomes among the 46 chromosomes, and they each provide data on the phenotypic traits.
Heterosomes and allosomes
The size, shape, and behavior of the sex chromosomes known as allosomes differ from those of autosomes. In humans, there are two allosomes. The sperm can include either the X or Y chromosome, and the X chromosomes are present in the ovum. These chromosomes aid in determining the progeny's sex. If both the mother and the father contributed an X chromosome, the child would be female (XX). A male child is born if the offspring inherits one X chromosome and one Y chromosome from the parents (XY). Simply said, the father's donation of an X or Y chromosome aids in determining the gender of the child.
to learn more click below-
brainly.com/question/14223099
#SPJ4
Answer:
I didn't get yr question... sorry...
<h2>stay safe healthy and happy...</h2>