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
lubasha [3.4K]
3 years ago
5

The gene for petal color in a flower has incomplete dominance, so that individuals with two A1 alleles (A1A1) are black, individ

uals with two A2 alleles (A2A2) are white, and individuals with one of each allele (A1A2) are mottled. In a cross between two black flowers, what is the probability of getting a mottled offspring? (2
Biology
2 answers:
Verdich [7]3 years ago
7 0

Answer:

The probability of getting a mottled offspring is 0%. There is no A2 allele involved in the cross.

Explanation:

<u>Available data</u>:

  • The gene for petal color in a flower has incomplete dominance
  • Two A1 alleles (A1A1) express black color
  • Two A2 alleles (A2A2) express white color
  • One of each allele (A1A2) express mottled color

In a cross between two black flowers, there is no allele A2, there are just two alleles A1. So, the cross is:

Parental)    A1A1    x    A1A1

Gametes)  A1   A1       A1   A1

Punnet Square)     A1         A1

                   A1    A1A1     A1A1

                   A1     A1A1     A1A1

F1 Phenotypes: 100% black flowers

F1 Genotype: 100% A1A1

There are 0% of probabilities of getting a mottled offspring.

Zepler [3.9K]3 years ago
7 0

Answer:

The probability is 0%.

Explanation:

We know that an individual with two A1 alleles (A1A1) are black, so if two black flowers are crossed that means two flowers with A1 (black)alleles, as these flowers do not have any A2 allele to give a mottled flower, the only type of flower that will come out from this cross is a black one.

We can see this with a Punnett square.

<u>    ║A1        ║     A1     </u>

<u>A1║  A1A1  ║    A1A1     </u>

<u>A1║ A1A1   ║   A1A1       </u>

You might be interested in
Q6.4. You are studying a population of wild coyotes and notice that every three years there is an epidemic of a bacterial
Setler79 [48]
I think it’s a or c but I’m not good at these types of things
5 0
2 years ago
Taking away the surface of the earth to get coal is called______.
ehidna [41]
Strip mining is taking away the surface, literally scraping the surface away to remove coal.
4 0
3 years ago
Read 2 more answers
Taking certain drugs during pregnancy is likely to expose unborn children to
NISA [10]
A child would be born with birth defects
5 0
3 years ago
Cartilage is a type of ____________ tissue that is softer and more flexible than bone. It is made of cells called ____________ .
zloy xaker [14]

Answer:

cartilage is a flexbile tissue  made of cells called  chond

Explanation:

6 0
3 years ago
The network of glands that release chemical messengers directly into the bloodstream is called the ________.
oksano4ka [1.4K]
The network of glands that release chemical messengers directly into the bloodstream is called the endocrine system.  The endocrine system produces and secretes t<span>hese chemical messengers, referred as </span>hormones directly into bloodstream  to transmit signals to appropriate part of body. The hormones regulate bodily functions like growth, metabolism, <span>tissue function, sexual function, reproduction, </span>sleep and mood. 
4 0
3 years ago
Other questions:
  • X-rays _____.
    12·1 answer
  • Some blind cave salamander have eye how might this be evidence that cave salamander evolved from sighted ancestors
    7·2 answers
  • 96% of marine animal species became extinct in the permian mass extinction at the end of the paleozoic, 252 million years ago. w
    5·1 answer
  • At what phase of mitosis does the amount of genetic material in each chromosome become half of what it just was?
    13·1 answer
  • Rh blood factor is determined by:
    7·1 answer
  • What are land slides caused by​
    9·2 answers
  • What is the purpose of a food chain?
    10·2 answers
  • So-called "dark matter" cannot be directly observed because
    7·2 answers
  • I need help it’s a test
    12·1 answer
  • Which of the following helps prevent erosion? (select 2 answers).
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!