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
dlinn [17]
3 years ago
13

How many arc seconds are in a degree

Biology
1 answer:
Andrews [41]3 years ago
3 0
3600, PLEASE MARK AS BRAINLIEST!!!
You might be interested in
Quién me ayudaría a hacer este crusigrama<br>gracias ​
diamong [38]

Answer: B i think

Explanation:

3 0
2 years ago
Read 2 more answers
The study of beak size in Darwin's finches provides what kind of<br> evidence for evolution:
fiasKO [112]

Answer:

Adaptive radiation!

6 0
3 years ago
Do you consider water and air part of nature?
Evgesh-ka [11]
Yes, because it is found and created naturally
8 0
3 years ago
Read 2 more answers
(Here's the table used for context)
Bingel [31]

In complete dominance, heter0zyg0us individuals carry both alleles -dominant and recessive- but only express the dominant phentoype. Cross 1: Nn x nn. Cross 2: NN x nn

<h3>What is complete dominance?</h3>

When the dominant allele completely masks the recessive allele, we talk about complete dominance.

This is the case of individuals that are heter0zyg0us for a particular gene and express the dominant trait. The dominant allele is hiding the expression of the recessive allele.

<h3>What is a punnett square?</h3>

The Punnett square is a representation that shows the different types of <u>gamete combinations </u>according to the alleles involved in a cross.

Punnett square shows the <u>probabilities</u> of getting offspring with different <u>genotypes</u> and their consequent<u> </u><u>phenotypes.</u>

So, according to the provided data,

  • <u>Cross 1</u>: gray fur x black fur

F1) 3 gray fur: 2 black fur

  • Cross 2: gray fur x black fur

F1) 0 gray fur: 5 black fur

By looking at the phenotype of progeny produced by family 2, and assuming complete dominance, we can infere that black is the dominant phenotype. Why is that? because when you crossed a gray animal with a black animal and the whole progeny is black.

So, assuming a diallelic gene coding for the fur color, we will name

  • N to the dominant allele that codes for black
  • n to the recessive allele that codes for gray.

Possible genotypes and phenotypes

  • NN ⇒ Black fur  ⇒ dominant phentoype
  • Nn ⇒ Black fur ⇒ dominant phentoype
  • nn ⇒ Grey fur ⇒ recessive phentoype

Here what you need to analyze is which phentoypes appear among the progeny and their frequencies to get to interprete the parents' genotype.

  • If both parents are h0m0zyg0us dominant (NN x NN), the whole progeny expresses the dominant trait (100% NN)

  • If one parent is h0m0zyg0us dominant and the other one heter0zyg0us (NN x Nn), the whole progeny expresses the dominant trait (50%NN and 50%Nn).

  • If one parent is h0m0zyg0us dominant and the other one h0m0zyg0us recessive (NN x nn), the whole progeny expresses the dominant trait (100% Nn).

  • If both parents are heter0zyg0us (Nn x Nn), the offspring will express both phenotypes in a ratio 3:1 (25% NN + 50% Nn and 25% nn).

  • If one parent is h0m0zyg0us recessive and the other one heter0zyg0us (nn x Nn),  the offspring will express both phenotypes in a ratio 1:1 (50% Nn and 50% nn).

  • If both parents are h0m0zyg0us recessive (nn x nn), the whole progeny will express the recessive trait (100% nn).

Now let us analyze the crosses,

  • <u>Cross 1</u>: gray fur x black fur

F1) 3 gray fur: 2 black fur

You crossed a black animal with a gray animal and the offspring expresses both phenotypes. So the black animal (dominant phenotype) must be heter0zyg0us for coat color.

Parents' phenotype)  gray   and    black

Parentals)                      nn     x     Nn

Alleles in Gametes)   n      n       N      n        

Punnett square)           N          n

                            n       Nn       nn

                            n       Nn       nn

F1) Genotype

1/2 = 50% of the progeny is expected to be heter0zyg0us, Nn

1/2 = 50% of the progeny is expected to be h0m0zyg0us recessive nn

      Phenotype

1/2 = 50% of the progeny is expected to be black -Nn-

1/2 = 50% of the progeny is expected to be gray -nn-

  • Cross 2: gray fur x black fur

F1) 0 gray fur: 5 black fur

You crossed a black animal with a gray animal and the offspring expresses only the dominant phenotypes. So the black animal must be h0m0zyg0us dominant for coat color.

Parents' phenotype)  gray   and    black

Parentals)                      nn     x     NN

Alleles in Gametes)   n      n       N      N        

Punnett square)           N         N

                            n       Nn        Nn

                            n       Nn        Nn

F1) Genotype

100% of the progeny is expected to be heter0zyg0us, Nn

      Phenotype

100% of the progeny is expected to be black -Nn-

Remember that the Punnett square does not give you information about the number of individuals that can be produced. It just provide information about probabilities of getting individuals with certain genotype of phenotype and their frequencies.

You can learn more about complete dominance and punnett square at

brainly.com/question/1953851

brainly.com/question/25357981

#SPJ1  

5 0
2 years ago
Which of the following is not an example of ectotherms?
lorasvet [3.4K]
A.human
c.turtles
because ectotherm also known as cold blooded ,which is any animal whose regulation of body temperature depends on external sources
7 0
3 years ago
Other questions:
  • Photosynthesis and cellular respiration are the same chemical formula. *
    6·1 answer
  • Hepatitis d virus is described as a defective virus because it cannot reproduce in a cell unless the cell is also infected with
    10·1 answer
  • Speculate on how higher sea-surface temperatures (sst) might impact earth's greenhouse effect.
    10·1 answer
  • Need help with this ??
    14·1 answer
  • What are the first or primary consumers in the food web below?(pic)
    8·1 answer
  • What does the word competition mean in biology?
    10·1 answer
  • What are the materials use for the nucleus and cytoplasm when making a 3D animal cell model?
    13·1 answer
  • Where in the human body is the majority of the phosphorus found?
    12·2 answers
  • Which item would have the largest weight on Earth?
    13·2 answers
  • A person who has type AB blood:
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!