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
MrRissso [65]
4 years ago
7

A researcher believes that she had found the gene that determines weight in mice. However, when she removes this gene from all o

f the cells in an animal, she observes that there is no difference between its weight and that of untreated mice. Furthermore, she can observe no other atypical phenotypes in the subject mouse. How can this be explained?
Weight in mice is influenced by multiple alleles of the same gene.

Weight in mice is a polygenic trait.

Only the recessive allele of the gene determines an animal's weight.

The gene removed from the animal is pleiotropic.
Biology
1 answer:
Sergeu [11.5K]4 years ago
3 0

Answer:

Weight in mice is a polygenic trait

Explanation:

Her observation might be as a result of the weight trait being a polygenic trait. A polygenic trait is a trait are train that are controlled by two or more genes. Additive interactions of these genes can influence expression of the trait. Thus weight is expression of a trait influenced by two or more genes. This to knock out the trait, she has to all genes involved in the expression and not just one gene.

You might be interested in
Why does amino acids decrease in ileum​
ASHA 777 [7]

Answer:

The two major pancreatic enzymes that digest proteins in the small intestine are chymotrypsin and trypsin. Trypsin activates other protein-digesting enzymes called proteases, and together, these enzymes break proteins down to tripeptides, dipeptides, and individual amino acids.

5 0
3 years ago
Explain why disease alleles for cystic fibrosis (CF) are recessive to the normal alleles (CF+), yet the disease alleles responsi
Korvikt [17]

Answer:

Cystic fibrosis mutation is recessive to normal allele because only one functional or normal allele is enough to produce a functional protein. So, if mutation is present in one allele then also, a normal protein can be made from normal allele. The presence of normal protein prevents the expression of disease.

In addition, mutated allele only results in the loss of function of protein which can be compensated by the expression of normal allele. It does not add any toxic effect to the protein. Consequently, the disease is inherited in autosomal recessive fashion.

In contrast, Huntington mutation not only alters the structure of the functional protein but also adds toxicity to it. The altered protein is enable to interact with 100s of other proteins and inhibit or decrease their function. So, if only one allele is present then also, the mutated protein will be produced and it will result in the phenotype. Consequently, it is inherited as autosomal dominant fashion.

4 0
3 years ago
The low incidence of cardiovascular disease among the inhabitants of the small town of roseta, pa, a village filled with the des
irakobra [83]

The correct answer is social support.

Social support refers to the actuality and perception that one is cared for, has support accessible from other individuals, and most importantly, that one is a part of a supportive social network.

The four kinds of social support are:

1. Emotional: Expressions of love, empathy, caring, and trust.

2. Informational: Suggestions, advice, and information.

3. Instrumental: Tangle assistance and service.

4. Appraisal: Information, which is beneficial for self-assessment.

7 0
3 years ago
Which of the following molecules provides the code of instructions for the
Anika [276]
The answer would be A. The DNA is the molecule that has the instructions needed for an organism to develop.

Hope this helps!! (:
3 0
3 years ago
Which one of the "big 3" macronutrients is the most calorically dense at 9 calories per gram?
Hatshy [7]
<span>Fat is by far the most calorie loaded of the macronutrients, containing 9 calories per gram compared to only 4 calories per gram for proteins and carbohydrates. Although a low fat diet is generally desirable for persons who would like to restrict their caloric intake, a no fat diet is no recommended by nutritionists or doctors since there is a dietary need for some fat in the diet.</span>
7 0
3 years ago
Other questions:
  • Which process are part of the water cycle ?
    13·2 answers
  • Genetic drift and natural selection can both be mechanisms of evolution. However, they are very different mechanisms.
    9·1 answer
  • Kevin has his mother’s blue eyes and her shyness, which can both be attributed to __________.
    11·2 answers
  • What can a hypothesis become if it is supported by repeated experimentation?
    9·2 answers
  • Which of the following statements about aldosterone is NOT correct?
    12·1 answer
  • Besides plants what 2 other types of organisms experience plasmolysis
    10·1 answer
  • Why are all of the organs in the alimentary canal important in digesting food? As food passes through each organ, different horm
    8·2 answers
  • Antonym for Food Chain?
    8·2 answers
  • Sexual reproduction in animals depends on the production of gametes.
    6·1 answer
  • CAN SOMEONE PLEASE TELL ME WHAT IS WRONG WITH A SIMPLE BIOLOGY QUESTION I KEEP ASKING, I WANT ONE OF THE MONITORS TO TELL ME IT
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!