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
Lilit [14]
3 years ago
7

What is a genotype for RR rr

Biology
1 answer:
nignag [31]3 years ago
7 0
Rr is the only genotype produced by RR and rr
You might be interested in
¿Qué se requiere para ejercer la sexualidad con respeto y responsabilidad?​
valentina_108 [34]

Answer:

  • usar método anticonceptivos y tener comunicación con la otra persona saber si quiere o no

3 0
3 years ago
Explain how the following factors support the mechanisms of evolution: a. b. Gene Flow
vladimir1956 [14]
1.- Natural Selection

Natural Selection leads to an evolutionary change when some individuals with certain traits in a population have a higher survival and reproductive rate than others and pass on these inheritable genetic features to their offspring. Evolution acts through natural selection whereby reproductive and genetic qualities that prove advantageous to survival prevail into future generations. The cumulative effects of natural selection process have giving rise to populations that have evolved to succeed in specific environments. Natural selection operates by differential reproductive success (fitness) of individuals.

The Darwin’s Finches diagramillustrates the way the finch has adapted to take advantage of feeding in different ecological niches:

2.- Genetic Drift

Random Drift consists of random fluctuations in the frequency of appearance of a gene, usually, in a small population. The process may cause gene variants to disappear completely, thereby reducing genetic variability. In contrast to natural selection, environmental or adaptive pressures do not drive changes due to genetic drift. The effect of genetic drift is larger in small populations and smaller in large populations.

Genetic drift is a stochastic process, a random event that happens by chance in nature that influences or changes allele frequency within a population as a result of sampling error from generation to generation. It may happen that some alleles are completely lost within a generation due to genetic drift, even if they are beneficial traits that conduct to evolutionary and reproductive success. Allele is defined as any one of two or more genes that may occur alternatively at a given site (locus) on a chromosome. Alleles are responsible for variations in a trait.

The population bottleneck and a founder effect are two examples of random drift that can have significant effects in small populations. Genetic drift works on all mutations and can eventually contribute to the creation of a new species by means of the accumulation of non-adaptive mutations that can facilitate population subdivision.

In population genetics, Gene Flow(also known as gene migration) refers to the transfer of genes from the gene pool of one population to another. Gene flow may change the frequency and/or the range of alleles in the populations due to the migration of individuals or gametes that can reproduce in a different population. The introduction of new alleles increases variability within a population and allows for new combinations of traits. Horizontal gene transfer (HGT) also known as lateral gene transfer (LGT), is a process in which an organism (recipient) acquires genetic material from another one (donor) by asexual means. It is already known that HGT has played a major role in the evolution of many organisms like bacteria. In plant populations, the great majority of cases linked to this mechanism have to do with the movement of DNA between mitochondrial genomes. Horizontal gene transfer is a widespread phenomenon in prokaryotes, but the prevalence and implications of this mechanism in the evolution of multicellular eukaryotes is still unclear. Nevertheless, many investigations on HGT in plants have been carried out during the last years trying to reveal the underlying patterns, magnitude and importance of this mechanism in plant populations as well as its influence on agriculture and the ecosystem.

Plant populations can experience gene flow by spreading their pollen long distances away to other populations by means of wind or through birds or insects (bees, for example) and once there, this pollen is able to fertilize the plants where it ended up. Pollen is a fine to coarse powder containing the microgametophytes of seed plants, which produce the male gametes (comparable to sperm cells). Of course, pollination does not always lead to fertilization.

Maintained gene flow also acts against speciation by recombining the gene pools of different populations and in such a way, repairing the developing differences in genetic variation.Thus, gene flow has the effect of minimizing the genetic differences between populations.

Human migrations have occurred throughout the history of mankind and are defined as the movement of people from one place to another. However, in a genetic context, this movement needs to be associated with the introduction of new alleles into a population through successful mating of individuals from different populations.






7 0
3 years ago
What is the melting point of platinum?
Butoxors [25]

Answer:

3215 F would be the platinum melting point.

it boiling point is 6917 F.

Explanation:

There is not much to explain other then heat melts metals when high enough, I know this because I own a forge and platinum is one thing I use for melting.

4 0
3 years ago
After completing 10 years of experimentation, a scientist reports a new scientific law about the movement of sand on beaches. Ho
Setler [38]
Experimentation (or the experiments the scientist was doing for 10 years) could be wrong or done in an inappropriate way. The only way to know if the information is valid is by checking the way the experimentation (data) was done as well as making sure to check all other factors
7 0
3 years ago
Which of the following is not a cause of water pollution?
Masja [62]

Answer:

what are your choices becasuse

Explanation:

there are types like oil pollution radioactive waste urban devlopement plastics

7 0
3 years ago
Other questions:
  • Which problem is most directly caused by burning waste?
    10·2 answers
  • based on the fact that people can get cancer regardless of their genetics, what are some things you can do to lower your risks o
    10·1 answer
  • Help!
    5·1 answer
  • Through the process of meiosis, sex cells are produced that are
    12·1 answer
  • Which causes an increase in greenhouse gasses
    7·1 answer
  • The phases of the moon are caused by
    13·2 answers
  • Which of the following is an environmental cost of agricultural
    5·2 answers
  • Describe the sampling method for determining population size.
    9·2 answers
  • Where do the instructions for determining the sequence of amino acids that make up a protein originate at?
    10·1 answer
  • 12. Which of these organisms undergoes the most dramatic changes as it grows
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!