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
Lana71 [14]
3 years ago
6

1. A couple of mice with brown fur and black eyes had litter with the following distribution of traits: 9 with brown fur and bla

ck eyes, 3 with brown fur and red eyes, 3 with grey fur and black eyes, and one with grey fur and red eyes. Propose an explanation.

Biology
1 answer:
Ierofanga [76]3 years ago
5 0

Answer:

The genotype of the couple of mice is heterozygous.

Explanation:

First, we going to classify each trait as dominant or recessive allele:

Brown fur: It’s a dominant allele because 12 of 16 mice have brown fur, therefore 75% of the litter have this trait.

Black eyes: It’s a dominant allele because 12 of 16 mice have black eyes, therefore 75% of the litter have this attribute.

Grey fur: It’s a recessive allele because only 4 of 16 mice have this trait, so 25% of the litter have grey fur.

Red eyes: It’s a recessive allele because 4 of 16 mice have red eyes, so 25% of the litter show this trait.

Second, we going to name each phenotype with a letter and use a capital letter for dominant allele or a small letter for recessive allele.  

For the color of the fur, let’s use letter “F”:  

F: Brown fur

f: Grey fur

For the color of the eyes, let’s use letter “E”:

E: Black eyes

e: Red eyes

The genotype of each phenotype is conformed by two letters that indicates, the recessive allele is showed in the phenotype only when both letters in the genotype are small letter.

For example, for fur, there are three combinations:

FF: Brown fur (two dominant alleles)

Ff: Brown fur (A dominant allele and a recessive allele)

ff: Grey fur (Two recessive alleles)  

For eyes, there are also three combinations:

EE: Black eyes (two dominant alleles) (

Ee: Black eyes (A dominant allele and a recessive allele)  

ee: Red eyes (Two recessive alleles)  

When both allele of the genotype are dominant or recessive, it is heterozygous, if there are a dominant allele and a recessive one, it is a homozygous.

Since there are 7 mice that show recessive phenotype, that means the genotype of the couple of mice are heterozygous. Although, both mice show a dominant phenotype, the genotype have a dominant allele and a recessive allele.

The genotype for the couple of mice is:

FfEe x FfEe

So, when we apply the Mendel's third law, we got the results showed in the chart.

You might be interested in
What is this diagram representing?
kodGreya [7K]

Answer:

A: Plant reproduction

Explanation:

Hopefully this helps!

3 0
3 years ago
Read 2 more answers
The level of ecologic organization that incorporates abiotic factors is the
aleksandr82 [10.1K]
I believe it is biosphear<span />
8 0
2 years ago
What did Charles Darwin conclude during his visit to the Galapagos islands?
harina [27]
Darwin finally consolidated all of his observations into his famous book On The Origin of Species, drastically and controversially altering the scientific view on the biological origins of life. I learned this a little while ago in my school, I kept notes!! Hope this helps!! <3
3 0
2 years ago
What is the function Alveoli?
Gnoma [55]

Answer:

The main function of the alveoli is storage of air for a shorter period which permits absorption of oxygen into the blood. The gaseous exchange of oxygen and carbon dioxide typically takes place in the alveoli. The main function of the bronchiole is to allow the passage of air freely into the lungs

8 0
2 years ago
Read 2 more answers
Thompson's cathode ray experiment showed that
wel
1. the first choice , hope that helped
5 0
3 years ago
Other questions:
  • Please check my answer
    13·2 answers
  • Which of the following organelles is part of the endomembrane system?
    12·1 answer
  • Blood has traveled from the heart to the toes. Which describes the next step
    7·2 answers
  • Which action is an application of biomechanics?
    13·1 answer
  • Which best describes oogenesis and spermatogenesis?
    12·2 answers
  • Please I have so much more to do.
    7·1 answer
  • Your own car has a mass of 2000kg. If your car produces a force of 5000 N, how fast will it accelerate?
    13·1 answer
  • Which of the following occurs during<br> Prophase?<br><br> Answer: Nuclear envelope breaks down!
    13·2 answers
  • What is the cause of lightning?
    11·2 answers
  • Which process described shows the hydrosphere interacting with the lithosphere?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!