answer.
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
FromTheMoon [43]
2 years ago
9

Un jardinero cruzó dos plantas de flores rosadas, con la esperanza de obtener plantas con flores del mismo color. Su sorpresa fu

e encontrar que, en la descendencia, aparecían flores rojas, rosadas y blancas en la proporción 1:2:1. Pregunta: a) ¿En qué se diferencia la herencia del color de estas flores y la de los guisantes? b) Indica el genotipo de las plantas del cruzamiento descrito.
Biology
1 answer:
Temka [501]2 years ago
4 0

Answer:

Este es un ejemplo de dominancia incompleta. Es una ocurrencia genética que ocurre cuando un gen dominante no expresa su manifestación completa en el alelo recesivo en un alelo dominante heterocigoto.

Por lo tanto, ambos rasgos se manifiestan, lo que resulta en la combinación de los dos alelos para los colores (blanco y rojo). Se dice que el alelo rojo dominante exhibe un dominio parcial sobre el alelo blanco recesivo, y esto da como resultado el alelo completamente rosado.

De acuerdo con la ley mendeliana, las dos flores rojas son heterocigóticas. Por lo tanto, las flores rojas heterocigóticas dominantes deben ser R. El alelo blanco es recesivo (rr) enmascarado por el rojo R,

Sin embargo, cuando se cruzan los dos alelos heterocigotos rojos:

Los fenotipos están en forma de

RR, (1) rojo Rr Rr (2) rosa rr (1) Blanco.

Esto ocurre porque el alelo rojo dominante no era total / completamente dominante en el alelo recesivo blanco en cada uno, lo que da como resultado un alelo rosa (el tercer fenotipo)

This is an example of incomplete dominance.It is a genetic occurrence  which occurs when a dominant gene does not express it full manifestation on the recessive allele in an heterozygote dominant allele.

Therefore,both traits are manifested which results in the blend of the two allele for colors(white and red).The dominant red allele is said to exhibit partial dominance over the recessive white allele.And this results in the entirely pink allele.

Based on Mendelian law the  two red flowers are  heterozygotes .Therefore, Red heterozygote dominant flowers should beRr.The white allele is recessive(rr) masked by the R-red,

However,when the two red heterozygote alleles are crossed:

The phenotypes are in the form of  

RR,(1) red  Rr Rr(2) pink  rr(1)White.

This occurs because, the dominant red allele was not fully/completely  dominant on the  white recessive allele in each,which results in pink allele(The third phenotype)

Explanation:

You might be interested in
How does secreting oil onto their fur help otters maintain homeostasis?
sesenic [268]

Answer:

Oils repel water, so it helps these animals keep their fur dry, which helps them stay warm.

6 0
2 years ago
Whole, intact shell eggs must be stored at a temperature of _______ to be kept safe?
Alexxx [7]
The answer is Air temperature of 45 degrees F or lower.  I<span>t is very important to refrigerate them at a temperature of 45 °F or below.  Keep the eggs in their carton and place them in the coldest part of the refrigerator, not in the door. Storing eggs in the refrigerator door could lead to temperature fluctuations that can lead to bacteria growth.</span>
7 0
2 years ago
Genetic engineering has produced goat milk containing proteins that can be used as medicines. this effect was produced by
Kruka [31]
Inserting foreign genes into fertilized goats eggs
6 0
2 years ago
Drawn below is the structure of singulair® (montelukast), a medication used to manage asthma. assign the absolute configuration
Zielflug [23.3K]
The answer is R. The structure of singulair (montelukast), a medication used to manage asthma, the absolute absolute configuration of the chirality center is r and not s. Montelukast is aeukotriene receptor antagonist used to relieve symptoms of seasonal allergies.and used <span>for the maintenance treatment of asthma.</span>
6 0
2 years ago
Which is a waxy, water-repelling outer covering of a plant?
Karolina [17]
A Cuticle, because a cuticle is waxy and it repels water and covers outside of a plant. Unlike a seed, phloem, ad xylem. If you think about your nails wouldn't you think cuticle as well? 
5 0
2 years ago
Read 2 more answers
Other questions:
  • Why were Archaea and Bacteria grouped together by biologists until recently?
    11·2 answers
  • Plant leaves contain openings called _____, which allow the diffusion of carbon dioxide into the leaf tissue.
    6·1 answer
  • Dennis Meadow’s __________ asserted that due to the expanding human population, the ecosystem will collapse by the middle of the
    5·2 answers
  • The eukaryotic cell's glycocalyx is select one:
    10·1 answer
  • Use the drop-down menus to complete the statements. A vertical column of elements in the periodic table is called a ____ . A hor
    9·2 answers
  • Students performed an experiment using eggs to observe the effect of osmosis on cells. The egg represented a typical cell. Befor
    6·2 answers
  • Most types of communication between cells utilize ________ the exchange of cytosol between the cells the movement of the cells c
    8·1 answer
  • Even though a motion picture actually consists of a series of still frames, we perceive them conveying continuous movement. This
    5·2 answers
  • Poison dart frogs live in the rainforest. They produce a poison by eating toxic fire ants. The only known predator is a snake, L
    14·1 answer
  • Which of the following statements concerning ribosomes is true?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!