How does crossing over add to the genetic diversity of sexually reproducing organisms

Answers

Answer 1
Answer: Crossover is the first way that genes are shuffled to give rise to genetic diversity. Crossover takes place in sexual reproduction.Chromosomes line up side by side and break off pieces of themselves, then trade those pieces with each other.When they break at the same place (locus) in the sequence of base pairs, the result is an exchange of genes called genetic recombination. That is the normal way for crossover to occur.Genetic recombination ensures that the daughter cells produced have a different genetic makeup from the parent cell and thus diversity is created.

Related Questions

Brothers, Patrick and Michael, do not look very much alike. Patrick has green eyes and blond, curly hair like his mother. Michael has blue eyes and dark brown, straight hair like his father. These directly observable characteristics are a) phenotypes. b) genotypes. c) chromosomes.d) DNA.
Epithelial cells grow close together to form the body's .
When does the anterior fontanel of an infant close
Please help (5 stars nocap)3
Two eukaryotic proteins have one domain in common but are otherwise very different. Which of the following processes is the most likely to have contributed to this similarity? A) exon shuffling B) gene duplication C) histone modifications D) random point mutations

A vaccine puts into the body weakened/dead pathogenic material, which by itself is incapable of causing disease. How does this help to protect the body in the case of infection by a live pathogen?

Answers

During the process of vaccination, an attenuated pathogen is inserted into the body the organisms. The attenuated pathogen is able to provoke the primary immune response in the body of the organism without causing any harm.

Once the primary immune response is generated, the body creates a memory in form of antibody to the pathogen. After vaccination, if the pathogen infects, the body recalls the memory and generates a secondary immune response. The intensity of the secondary immune response is much higher than the primary one, so, as soon as the pathogen enter in the body, the antibodies against it are activated and result in defeating the infection.

For a better understanding purpose, the intensity of the primary and the secondary immune response is given in the figure:

Answer:

d.  a vaccine causes the secretion of antibodies which remain in blood and fight the pathogen at the time of an infection.

Unlike identical twins, fraternal twins A. are always the same sex

B. are produced from two identical embryos

C. result from two eggs fertilized by two different sperms.

D. is wrong

Answers

C. 2 eggs, 2 different sperm

Which part of the body contains enzymes that break down starch into simple sugars

Answers

the mouth contains a digestive enzyme called Amylase with breaks down starch into maltose, which if further broken down into Glucose by the enzyme Maltase.

As set of overlapping DNA fragments that form a contiguous stretch of DNA is called aA) chromosome.
B) sequence.
C) map.
D) contig.

Answers

the answer is D) contig

Acontiguous stretch of DNA formed from overlapping DNA fragments is known as a contig. Contigs are a crucial component in DNA sequencing and genome assembly.

A set of overlapping DNA fragments that form a contiguous stretch of DNA is referred to as a contig. In molecular biology and genetics, contigs are used in the process of DNA sequencing to assemble larger sequences of DNA from smaller sequences or fragments. Creating a contig is a crucial step in genome assembly, and it is typically accomplished using computer algorithms that match overlapping ends of different DNA fragments.

Learn more about Contig here:

brainly.com/question/29438881

#SPJ11

Which equation correctly shows the reactants and products of photosynthesis? A C6H12O6 + 6CO2 --> 6O2 + 6H2O B C6H10O6 + 6O2 --> 6CO2 + 6H2O C 6O2 + 6H2O --> C6H10O6 + 6CO2 D 6CO2 + 6H2O --> C6H12O6 + 6O2

Answers

The right option is D 6CO2 + 6H2O --> C6H12O6 + 6O2

This equation shows that carbon dioxide and water are used with light energy to produce glucose sugar and oxygen gas.

Photosynthesis is a process by which plants and other autotrophs use energy from sunlight to produce nutrients from carbon dioxide and water. Plants absorb water through the roots, carbon dioxide from the air, and light energy from the Sun, to produce glucose and oxygen.


Final answer:

The correct equation for photosynthesis is 6CO2 + 6H2O --> C6H12O6 + 6O2. In this complex process, carbon dioxide and water are transformed into glucose and oxygen with the help of sunlight.

Explanation:

The correct equation that represents the reactants and products of photosynthesis is option D: 6CO2 + 6H2O --> C6H12O6 + 6O2. In this process, carbon dioxide (CO2) and water (H2O) are the reactants which, when exposed to sunlight, get transformed into glucose (C6H12O6) and oxygen (O2), which are the products. While the equation seems simple, it represents a complex multi-step process that plants use to convert light energy into chemical energy.

Learn more about Photosynthesis here:

brainly.com/question/29764662

#SPJ3

What word does the arrow in the chemical equation for photosynthesis stand for?

Answers

it stands for light energy from sunlight