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
miv72 [106K]
3 years ago
13

The second generation phenotypes resulting from the cross of purebred monohybrid pollination will display a ratio of _____. 2:2

4:1 3:1 none of the above
Biology
2 answers:
Art [367]3 years ago
5 0
The answer is 3:1.

If we imagine that plant has two alleles for the trait, we can dominant allele represent with P represents and recessive allele with p. To get purebred monohybrid in the first generation, parents must be a dominant homozygote (PP) and a recessive hetero<span>zygote (pp):

Parental generation: PP   x   pp
The first generation: Pp  Pp  Pp  Pp

Pp represents a heterozygote.
If we cross these heterozygotes:

The first generation: Pp   x   Pp
The second generation: PP  Pp  Pp  pp

If dominant allele determines the phenotype, there will be 3 plants (one PP and two Pp) with one phenotype and only 1 plant </span><span>(pp)</span> with another phenotype and vice versa.
Sedbober [7]3 years ago
5 0

3:1 is correct, had this question earlier

You might be interested in
Dr. Alvarez wanted to see if he had discovered a new element, so he analyzed his new element and performed an experiment to dete
Galina-37 [17]
Dr Casey Repeating the experiment
8 0
3 years ago
Read 2 more answers
What is the difference between a pupa and the adult stage of a butterfly?
olga_2 [115]

Answer:

What is the difference between a pupa and the adult stage of a butterfly?

Adult butterfly has reaches its maximum growth stage while pupa is still growing and will develop into caterpillar before metamorphosing into adult butterfly, Adult has colorful wings while pupa stage does not

Explanation:

5 0
3 years ago
In the summer, snowfall decreases, and melting increases, which results in the outflow being melt.water, thus leading to an incr
JulijaS [17]

Answer:

Negative

Explanation:

5 0
2 years ago
The organ systems are consistently working together to maintain _[blank]_.
olga2289 [7]

Answer:

HOMEOSTASIS.

Explanation:

The nervous and endocrine system exert the ultimate control over homeostasis because they coordinate the functions of the body system.Refulation of body temperature,blood pressure,pH,and gluclose concentration are for examples of how the body maintains homeostasis. The answer should be *homoestasis*

4 0
4 years ago
Read 2 more answers
Identify examples of RRAD from the process of photosynthesis
kiruha [24]

Answer.....

Explanation:

5 0
3 years ago
Other questions:
  • A. In a purebred tall plant, what gametes are possible?
    12·1 answer
  • Decline in the bodys ability to restore homeostasis
    10·1 answer
  • 1.) Earth can be divided into five layers: the lithosphere, the asthenosphere, the mesosphere, the outer core, and the inner cor
    8·2 answers
  • Which statement below correctly summarizes cellular respiration?
    9·1 answer
  • Garage Sales &amp; eBay, how do these 2 activities relate to consumer and producer surplus? Give examples.
    9·1 answer
  • Multiple choice
    5·1 answer
  • Which is the correct order for these steps in cell signaling?
    15·1 answer
  • Why is the blood pressure inside a vein less than blood pressure inside an artery
    11·1 answer
  • Label the parts of the microscope shown in the picture below using the following terms: coarse adjustment knob, eyepiece (or ocu
    12·1 answer
  • Why is Robert Llewellyn referred to as a seed artist?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!