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spin [16.1K]
3 years ago
7

The general expression for mutation rate is the number of mutant cells over the total number of mutant cells. Given that the cel

ls were treated and then allowed to complete one round of replication, the final computation of mutation rate should be divided by two (two cells are plated for each cell treated). What is the rate of mutation at the locus associated with leucine biosynthesis
Biology
1 answer:
NARA [144]3 years ago
5 0

Answer:

The rate of mutation is low

Explanation:

Biosynthesis of leucine means the biological production or breakdown of leucine.

Leucine is very important in the body because it helps in the protein synthesis and muscular development. It should be understood also that too much of leucine in the body might result to low blood pressure.

In this case, the rate of mutation to the locus related to leucine biosythesis will be low.

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The pedigree below tracks the presence of dimples through a family's generation. Having dimples is an autosomal dominant trait.
yulyashka [42]

A pedigree is a representation of a family history tracking a trait. The graph shows the inheritance pattern of the trait and its expression through several generations.

<h3>What is an autosomal dominant trait?</h3>

The autosomal dominant trait is the characteristic that is coded by a gene located in an autosomal chromosome (this is, not a sexual chromosome).

This trait is dominant because it is coded by the dominant allele, meaning that the recessive allele codes for the absence of dimples. The presence of only one dominant allele in the genotype is enough for the idividual to express dimples.

<u>               Genotype                                  Phenotype     </u>

DD, Homozygous dominant                        Dimples

Dd, Heterozygous                                        Dimples

dd, Homozygous recessive                       No Dimples

<h3>What is a pedigree?</h3>

The pedigree is the representation of a family history conserning a certain trait. In this case, dimples.

The pedigree shows the expression -and inheritance pattern- of the trait through several generations.

To correctly interpret a pedigree, we need to know that

  • Family members

→ Individuals are represented with geometrical figures.

→ Males are squares

→ Females are circles

  • Trait/Phenotype

→ Healthy/normal/not affected  individuals are represented with empty figures

→ Affected/mutated individuals are represented with solid black figures

  • Generations

→ Each file is represented with a roman number, indicating the Generation.

Here we will assume that

  • Individuals represented with solid figures express dimples -shaded individuals-. They can be either DD or Dd. This is because dimples is not usuall.
  • Individuals with no dimples are represented with empty figures and are dd.

According to the provided pedigree,

I-1 ⇒ man DD or Dd

I-2 ⇒ woman dd

II-1 ⇒ man Dd or DD

II-2 ⇒ woman dd

II - 5 ⇒ woman dd

III - 1 ⇒ man Dd

III- 2 ⇒ woman dd

III - 6 ⇒ woman dd

Since this pedigree does not specify the relationship between individuals, I can not answer the question based on it. So, I will attach another tree to specify genotypes.

I advise you study this new example, and then follow the same reasoning to choose the correct individual according to you pedigree.

Yo can learn more about pedigrees at

brainly.com/question/19516649

#SPJ1

7 0
1 year ago
What are the three types of chemical bonds
Deffense [45]
The three types of chemical bonds are Ionic, Covalent, and Metallic
7 0
3 years ago
1. Which structure is found in all animal cells?
gayaneshka [121]
<h2>Question:-</h2><h3> Which structure is found in all animal cells?</h3>

<h2>Answer :- Centrioles </h2>

<h2>Explanation:- </h2>

  1. They are barrel shaped cell organelles only found in animal cell
  2. There function is to help in division of cell membrane by forming microtubules which help in division of chromosomes ( spindle fibres)
  3. They play role in arranging microtubules which act as endoskeleton of the cell
  4. They also help in formation of cell structure like cilia and filaments
6 0
2 years ago
Read 2 more answers
Why is darker skin an advantage in place with a lot of sun
aleksandrvk [35]

Answer:

High amounts of melanin.

Explanation:

Dark-pigmented people living in high sunlight environments are at an advantage due to the high amounts of melanin produced in their skin. The dark pigmentation protects from DNA damage and absorbs the right amounts of UV radiation needed by the body, as well as protects against folate depletion.

8 0
3 years ago
Read 2 more answers
Is hunting in groups more effective than solo?
adelina 88 [10]

Answer:

Yes

Explanation:

Hunting in groups is much more effective than hunting solo because you have more people to help catch whatever it is you're trying to get.

5 0
3 years ago
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