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
tigry1 [53]
3 years ago
5

The standard unit of radiation related to biologic hazard is known as the

Biology
2 answers:
Fiesta28 [93]3 years ago
5 0

The standard unit of radiation related to biologic hazard is known as roentgen i think

vesna_86 [32]3 years ago
4 0
The standard unit of radiation related to biological hazards is known as the Roentgen. 
You might be interested in
PLEASE HELP WITH MY BIOLOGY
Alecsey [184]

I think A makes the most sense..

6 0
2 years ago
People who are tune deaf are unable to follow a rhythm. Scientists have evidence that tune deafness can be genetic. The pedigree
butalik [34]

Question

Pedigree attached

a. Provide evidence from the pedigree that conclusively shows that the tune deafness allele is autosomal dominant, not autosomal recessive. Explain your reasoning.

b. Identify the genotypes of individuals 5 and 6, and then draw the Punnett square for the cross of these two individuals.

c. Compare the expected percentage of each phenotype of the offspring from the cross in part (b) with the actual percentage of each phenotype observed in the children of individuals 5 and 6.

Answer/Explanation:

a. Autosomal dominant means that even having one copy of the allele T will produce a tune deaf individual. The evidence of this is that individuals II.3 and 4 have children (III. 8 and 9) with normal tune perception. This suggests that they have inherited the normal allele from both parents. That means II.3 and II4 must be heterozygous, in order to pass on the normal allele. This makes sense if tune deafness is dominant (because 3 and 4 will both be Tt and Tt, so can pass on the t alleles). However, if tune deafness was recessive, that would mean that individual II 3 and 4 both have to carry 2 copies, meaning there is no way their children would have normal tune perception.

b. Since individual 5 is unaffected and we know this is the recessive trait, they must be Tt. Since individual 6 is affected, they must be either Tt or tt. However, they have children who are unaffected (11, 12, 13) who must be tt. This means, individual 6 must have the t allele to pass on, and must be Tt. Therefore, the cross between individuals 5 and 6 is tt x Tt:

         T        t

t        Tt       tt

t       Tt       tt

c) The punnet square shows the children from (b) have a 50:50 chance of being tune deaf vs normal tune perception (50% each). In contrast, the actual ratios are 25% tune deaf to 75% normal tune perception. (1:4). This deviates from the expected ratio, but since all of these are due to chance, it is not an unexpected occurrence. Perhaps if there were 10, 50 or 100 children (!) from this cross, the results would be more like the expected ratio

5 0
3 years ago
A farmer wants to know if adding antibiotics to cow feed will fatten them up. He takes two groups of 25 cows each. One group is
galina1969 [7]

Answer:

The correct answer is-

Hypothesis: Antibiotics cause weight gain in cows.

Independent Variable: Antibiotic pill

Dependent Variable: Weight of cow

Control Group: a group of cows gets a placebo pill

Experimental Group: a group of cows gets an antibiotic pill

Explanation:

The Independent variable is the variable that causes the response from the dependent variable or affects the dependent variable in this study the antibiotic pill affects the weight of cows so The independent variable is an antibiotic pill and the dependent variable is the weight of cows.

The control group is the group of subjects that did not get the treatment in a scientific study in the case of this study group of cows that receives the placebo pill is the control group and the experiment group is subjects that receive the treatment which is a group with the antibiotic pill.

4 0
3 years ago
Can someone plz help me out. I don’t really understand this.
FrozenT [24]
7. b and 8. c i attached the photo for u to see how i did it

8 0
2 years ago
The evolution from vesicles to true cells was best facilitated by the development of (2 points) a membrane separating the cell f
Tpy6a [65]

Answer:

b. such as RNA and DNA

Explanation:

DNA and RNA represent essential molecules present in all organisms. These nucleic acids (DNA and RNA) are composed of large chains of nucleotides that function to synthesize proteins required for cellular processes and to produce cell structures. Both RNA and DNA are highly stable biomolecules capable of storing and transmitting genetic information, which has been a requisite for the evolution of modern cells. Moreover, it is important to note that DNA is a double-stranded molecule and therefore it is more stable than single-stranded RNA.

6 0
2 years ago
Other questions:
  • Similarities between rotating earth and non rotating earth
    5·1 answer
  • PLEASE HELP WILL GIVE BRAINLIEST TO CORRECT ANSWER
    6·1 answer
  • Where does the organic material in soil originate?
    10·1 answer
  • There is a large amount of biodiversity throughout the world. According to the theory of natural selection, which of the followi
    9·2 answers
  • 1. Transcribe the following DNA sequence into mRNA: TAC CTG GAT ATC
    5·1 answer
  • Which formation stores groundwater?
    5·2 answers
  • Imagine the Moon rotates twice in the same amount of time the Moon orbits Earth once. Would you be able to see the Moon’s far si
    9·1 answer
  • please urgent help... below is a diagram of a cart on a flat surface being acted upon by a force to the right. assume that frict
    5·1 answer
  • What does the diet of snowy owls consist of? (Select all that apply.)
    8·1 answer
  • when taking a blood pressure reading which reading indicates the greatest force on the walls of the artery?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!