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LuckyWell [14K]
3 years ago
11

Infection-causing organism become more and more resistant over time to the very drugs that used to kill earlier versions of them

is a great example of
Biology
1 answer:
Andru [333]3 years ago
4 0
Antibiotic resistance
Antibiotic resistance occurs when bacteria change in some way that reduces or eliminates the effectiveness of drugs, chemicals, or other agents designed to cure or prevent infections. The bacteria survive and continue to multiply causing more harm.
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Suppose two independently assorting genes are involved in the pathway that determines fruit color in squash. These genes interac
Vaselesa [24]

Answer:

120 white individuals

30 yellow individuals

10 green individuals  

Explanation:

Available data:

  • Dominant epistasis: Phenotypic frequencies 12:3:1
  • W allele codes for a dominant white phenotype
  • w allele codes for a colored squash
  • Y allele codes for a dominant yellow phenotype
  • y allele codes for a recessive green phenotype
  • W allele will always mask the phenotype produced by Y or y alleles
  • 160 offspring

Dihybrid Cross

Parental)   WwYy      x      WwYy

Gametes) WY   Wy    wY    wy

                 WY   Wy    wY    wy

Punnet Square)

                            WY         Wy        wY       wy

               WY     WWYY   WWYy   WwYY  WwYy

               Wy      WWYy   WWyy    WwYy  Wwyy

               wY      WwYY   WwYy    wwYY  wwYy

               wy       WwYy   Wwyy    wwYy  wwyy

F1 Phenotypic Frequency)

White phenotype: 12/16 = 120 individuals

Yellow phenotype: 3/16 = 30 individuals

Green Phenotype: 1/16 = 10 individuals

To know how many offspring are expected to have the white, yellow, and green phenotypes, you can perform a three simple rule. This is:

16 ------- 160 offspring

12 White ------- X = 120 offspring

3 Yellow ------- X= 30 offspring

1 Green --------X = 10 offspring              

3 0
3 years ago
Dichotomous keys ask
astraxan [27]
Wut I don’t get it : /
3 0
3 years ago
Which of these is purposefully changed during a scientific investigation? (4 points)
Hunter-Best [27]

Answer:

the outcome will change if you change anything

Explanation:

can you be a little more specific that would help me a lot with answering this the best way possible

3 0
3 years ago
During which part of the cell cycle is the duplicated genetic material within the nucleus of a parent cell seperated to create t
nata0808 [166]

Mitosis is the part of the cell cycle where cell division makes 2 daughter cells that has the same amount and kind of chromosomes as the parent nucleus.


3 0
3 years ago
Use this branching diagram to answer the questions. IF U DONT KNOW THE ANSWER THEN DONT PUT AN ANSWER.
Airida [17]

Answer:

Explanation:

The common characters shared by frogs and pigeons are:

presence of jaws

four limbs  

The frogs and pigeons share these characteristics because they both are derived or evolved from a common ancestor.

During the course of evolution, the jaws are evolved in beaks in birds or pigeon as beak is light-weight in comparison to jaws.

Similarly, the forelimbs get covered with feathers to become wings.

7 0
3 years ago
Read 2 more answers
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