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
Which best describes the friction force of his trip?
Natali5045456 [20]

Answer:

Friction decreased when he went from pavement to ice and then increased two more times.

Explanation:

3 0
3 years ago
The human genome project identified the sequence of base pairs in human DNA and identified several genes. Which question would l
slava [35]
Answer;
D. should there be laws to protect DNA information;

The question that would at least lead to a scientific investigation based on these findings is; should there be laws to protect DNA information. 

Explanation;
Human genome project is a scientific research project with the goal of determining the sequence of nucleotide base pairs that make up human DNA, and of identifying and mapping all of the genes. Its main aim was to provide a complete and accurate sequence of the 3 billion DNA base pairs that make up the human genome and find all the estimated genes
7 0
3 years ago
Read 2 more answers
Fish and amphibians commonly conduct fertilization.
koban [17]
External fertilization is the correct answer.
5 0
3 years ago
Read 2 more answers
How would such an increase in temperature most likely affect earths water cycle?
aev [14]

Answer:

How would such an increase in temperature most likely affect Earth's water cycle? A. It would reduce ocean evaporation which would result in a decrease in precipitation. ... It would diminish cloud formation which would result in an increase in precipitation.

Explanation:

7 0
3 years ago
How do we REMOVE water vapor (a gas) from our atmosphere?
NikAS [45]

Answer:

to get the heat of the planet

Explanation:

6 0
2 years ago
Other questions:
  • The net result of a single glycolysis run is the formation of
    6·1 answer
  • CAN SOMEONE PLZ HELP ME!! ;_;
    10·2 answers
  • Help with DNA please!!!
    7·1 answer
  • Help ASAP will give BRAINLIEST
    9·2 answers
  • Select the five cellular organelles that are part of the endomembrane system.
    10·1 answer
  • Which kind of wave would be observed in outer space between planets, where there is very little matter?
    13·2 answers
  • The hypothalamus, which is involved in maintaining steadiness of bodily functions, the hippocampus, which is involved in memory,
    10·1 answer
  • Which organelle should be listed under “Both” in the diagram?
    13·2 answers
  • True or false During meiosis, the number of chromosomes in each cell stays the same.
    7·1 answer
  • Mitosis is the only type of cellular division in which:
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!