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
sweet [91]
3 years ago
15

A dominant gene (W) produces wire-haired texture in dogs; its recessive allele (w) produces smooth hair. A group of heterozygous

wire-haired individuals are crossed and their F1 progeny are then test-crossed. Determine the expected genotypic and phenotypic ratios among the test cross progeny:
Biology
1 answer:
Marysya12 [62]3 years ago
8 0

Answer: Phenotypic ratio=2:2; Genotypic ratio= 2:2.

Explanation: Test cross is the breeding of an individual with Phenotypically recessive individuals.

Heterozygous wire-haired = Ww

Recessive trait= ww

Test crossing result of offspring= Ww Ww ww ww

Genotypic ratio (genetic composition) = 2:2

Phenotypic ratio= 2:2

2 offsprings are wire-haired and 2 Offspring are smooth-haired.

You might be interested in
1
zimovet [89]

Answer:

OB. Run-off from fertilized land increases nitrogen levels in ecosystems and encourages algal growth. is the correct answer.

Explanation:

because This in turn is leading to global warming and weather changes.

8 0
3 years ago
Read 2 more answers
The independent is which of the following: A. What is measured B. What is changed by the researcher
Illusion [34]

Answer:

B

Explanation:

4 0
3 years ago
Select the statement below that is true concerning the Bacteria
Kryger [21]

Answer:

D

Explanation:

there are around as many bacteria cells as there are human cells in the human body.

4 0
2 years ago
Human caused reductions of biodiversity, include pollution, invasive species, and overexploitation.
Andrew [12]

Answer:

True

Explanation:

Development, together with globalization, drove severe changes at a global level. The natural and original environments suffered from these effects and still are.

Human beings have constantly been altering the natural ecosystems and causing irreparable damages to nature. For many decades, development involved society and technology advance over new areas unpopulated by humans.

<u>Some</u> of the principal human activities responsible for biodiversity loss are

  • the uncontrolled use of unrenewable resources,
  • overexploitation of renewable resources;
  • land destruction for the mining industry, farming and cattle industry, buildings, and other infrastructures;
  • the unplanned advance of cities, and opening of new roads to connect those cities.  

All of them involving

  • deforestation and fragmentation of natural landscapes;
  • water, air, and soil pollution,
  • species loss, and reduction of biodiversity.

With globalization, transport around the world became normal. And when traveling around the world, new species are intentionally or unintentionally transported too. When these species, of animal or vegetable origin, get established in a new area, they overgrow to the point of turning invasive.

Invasive species are uncontrollable and cause severe damage in native endemic species by competing for resources. The whole ecosystem structure changes.

But there are some background glitches in the system that are the principal responsible for all the mentioned activities. Some important aspects are lacking

  • The respect for nature,
  • People´s education at different levels to care and protect wildlife,
  • Interest in keeping ancestral knowledge,
  • Planning and previous environmental impact studies,
  • Policies to control human activities,
  • Caring involved government.

If, as a society, we lack these aspects, the possibilities of changing our impact on nature are far away.  

6 0
3 years ago
The most massive part of the atom is(are) the _____ which has(have) a _____ charge.
Nina [5.8K]
The most massive part of the atom is the NUCLEUS which has a POSITIVE charge.

(That's why we have electrons to balance the charge)

I hope this helps!
6 0
3 years ago
Other questions:
  • Identify the independent and dependent variables in the following sentence: Joan is collecting data on gender differences (male,
    7·2 answers
  • If many different species live in an ecosystem, this helps the ecosystem to fill its _______.
    8·1 answer
  • In rosebushes, chlorophyll is responsible for the process of photosynthesis. chlorophyll is located in
    5·1 answer
  • Which of the following should be given to students before they begin a laboratory experiment?
    15·2 answers
  • once equilibrium is reached in which direction will molecules in a liquid state move across the membrane​
    7·1 answer
  • A food desert is a location where:
    9·1 answer
  • Concept 2 Multiple Choice (2pts each)
    10·2 answers
  • Assume these are the demographics of a small country in Asia:
    8·1 answer
  • How does a phospholipid behave in water?
    14·2 answers
  • A researcher is studying the plants and animals in a particular biome. The observations include ferns, large woody vines, monkey
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!