1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Fed [463]
3 years ago
6

A researcher is trying to construct a molecular-based phylogeny of the entire animal kingdom. Assuming that none of the followin

g genes is absolutely conserved, which of the following would be the best choice on which to base the phylogeny? A) genes involved in chitin synthesis
B) collagen genes
C) genes involved in directing segmentation development
D) genes involved in eye-lens synthesis
Biology
1 answer:
faust18 [17]3 years ago
3 0

Answer:

Collagen genes.

Explanation:

Phylogenetics helps to study the evolutionary relationship among the different group of organisms. The different characteristics like DNA sequences, mitochondria sequences can be used for the construction of phylogeny tree.

Collagen genes can be used to study the evolutionary relationship as mammals contains nearly 30% of total protein. The collagen gene shows the most of the conserved sequences among the different group of organisms and shows the most recent evolved characters in vertebrates.

Thus, the correct answer is collagen genes.  

You might be interested in
The presence of a specific trait is genetically inherited. There are only two possible outcomes for this trait: An individual ei
Igoryamba

Answer:

D) Each parent contributes one allele for this trait  

Explanation:

All traits of individuals are determined by specific genes of that trait. For example, there is a certain gene for height, certain gene for eye color, face shape etc.

Genes are the units of hereditary, and for every trait there is one gene in every organism. However, one gene is present in two alternative forms called alleles in an organism. For example: There is a trait height, a person has two alleles for the height gene, one allele is for short height, and other allele is for tall height. The trait of tallness is dominant over the trait of shortness, Therefore, this person will have tall height.

Now the alleles are transmitted from parents to offspring. Every parent contributes one allele for a specific trait, in the process and transmit it to offspring.

The allele which will be dominant will be expressed while the one that is recessive will e suppressed.

Therefore, option D is the right answer.

Hope it helps!

6 0
3 years ago
Free energy in the cell creates disorder. Cells harness free energy to drive unfavorable reactions by using Activated Carrier Mo
Tcecarenko [31]

Answer:

G

Explanation:

NADPH (Nicotinamide Adenine Dinucleotide Phosphate) and ATP (Adenosine Triphosphate) are forms in which energy is stored in metabolic reactions

5 0
3 years ago
Identify the MOST specific taxonomic level.
UNO [17]

Answer:

Species

Explanation:

Species is the most specific and basic taxonomic level of classification and also the basic unit of biodiversity. Species is defined as group of highly closely related organisms that mate or breed to produce fertile offspring. After species genus is specific, and mostly organisms names are identified by species names and genus names as in binomial nomenclature, all scientific names are derived from genus and species e.g. the scientific name of frog is <em>Rana tigrina, </em>here '<em>Rana</em>' is genus name that is always capitalized and '<em>tigrena</em>' is species name that starts with small letter but both are always written in italics or underlined.

7 0
3 years ago
3 facts about skin disease and disorders
Vilka [71]

Answer:

– People with skin disorders face higher rates of severe depression and issues with self-esteem.

– Children with skin disorders experience much higher rates of bullying, which can lead to social withdrawal, underperformance, and refusal to attend school

– 60% of young patients with skin conditions report being teased and bullied

– 34% report experiencing limitations in recreational activities because of their skin.

6 0
3 years ago
Read 2 more answers
Which type of glandular cells in the stomach secrete hydrogen and chloride that form hydrochloric acid?
Simora [160]
The correct option is D.
Parietal cells are the epithelial cells which secrete hydrochloric acid and intrinsic factors. The cells are located in the gastric glands which are found in the linings of the walls of the stomach. The hydrochloric acid produced by the parietal cells helps in the conversion of the enzyme pepsinogen to pepsin during the digestion process.
8 0
3 years ago
Other questions:
  • The Florida panther faced a grim outlook, nearing extinction. Although still endangered, they are flourishing more than they wer
    12·1 answer
  • Why is phototropism an adaptation that is necessary for plant survival?
    6·1 answer
  • Mad cow disease is an infectious disease where one misfolded protein causes all other copies of the protein to begin misfolding.
    7·1 answer
  • Cells that grow too large have
    5·1 answer
  • ____________________________ is the process in which humans chose the desired traits of an organism.
    13·1 answer
  • Consider the parts of a polar ecosystem and a desert ecosystem.
    10·2 answers
  • The analysis of rRNA gene sequences to compare evolutionary relationships is known as
    5·1 answer
  • 14. In canaries, the singing gene (S) is dominant over nonsinging (s). When a 1 poin
    7·2 answers
  • What was tha accomplishment of Wendell of Stanley
    6·2 answers
  • Multiple responses. Select all of the leukocytes that are classified as granulocytes: cytoplasmic granules and lobed nuclei.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!