Use a Punnett square diagram to show why, for each pregnancy, the chances of giving birth to either a boy or a girl are 50-50. Explain the results shown in your diagram.​

Answer:

Because the offspring of a male and female are always going to be xx, xx, xy, or xy.

Explanation:

Remember that men have different reproductive chromesomes than women. Women have 2 x chromesomes(xx) while men have 1 x and 1 y(xy). These are given down to their offspring.

So we can write the this out in a punnet square as(link down below).

After you see the visual, you will find that the genotypes are xx, xx, xy, xy.

As I said above, women have sex chromesomes xx, while men have sex chromesomes xy. When you match the genotypes on the punnet square with the ones we know from men and women, we find that two of them match with men and two match with female.

So with this, we can conclude that 2/4 of offspring will always be male and 2 will be female. And as you well know 2/4 is 1/2 which is 50%.

Explain why you should never eat mushrooms you find in the woods unless you know for certain which type of mushrooms they are.

Viroids’ largest impact is on ________.

Storz (2007) describes an adaptive response to low partial pressure of oxygen in an environment at high elevation. Describe three other environmental conditions besides high elevation that might result in adaptation to hypoxia. List an organism found in each of the described environmental conditions that would be predicted to exhibit adaptive responses to low partial pressure of oxygen.

a model of a car has a scale 1:20. the volume of the actual car is 12^3 find the volume of the model​

A common strategy for gaining compliance used by car salespeople is the door-in-the-face technique.
True or False?

A biologist explored a remote island and discovered a new living organism. After several observations were made of the
organism, the biologist claimed that it was a vascular plant. His notes are listed below.
"I have found a new organism during my explorations. The organism was found low to the ground and is green. Based on
experiments, the organism seems to require sunlight to survive. Small, oval seeds were
found on the organism; they grew
into identical organisms when put in the soil. The organism had sharp spikes around the main body, most likely for
protection. The organism was able to absorb water from the surrounding soil. It was also observed that the organism used
specialized veins to carry water throughout its body. Based on these observations and experiments, I have determined that
this organism is a vascular plant."
Which of the following observations LEAST supports his claim?
A)
The organism is low to the ground.
B)
The organism reproduces with seeds.
The organism requires sunlight.
D)
The organism was able to transport water through specialized veins.

Please help I really need it pleaseeee

HELP!!!!! PLEASE

Which pair of molecules, when bonded together, would most likely be found in a molecule of DNA?
A) ribose and adenine
B) ribose and thymine
C) deoxyribose and uracil
D) deoxyribose and guanine

Name the major nitrogenous waste product in nile perch​

why won't we bring back dinos if we have the right tec and stuff to do so and have we not just found a small amount of dna of a pregnant t rex​

Please help this is urgent question and choices are in the image below
btw it is QUESTION NUMBER 13

Which population is most likely to survive in the event of a new disease?
A.
a very diverse population
B.
a somewhat diverse population
C.
a population with little diversity
D.
a population with no variation

The ligand binding domain of a protein must be inserted in

Dehydration synthesis is involved in the synthesis of all the following except
1. DNA
? proteins.
priysaccharides.
4. lipids:
5. monosaccharides.​

Fill out this cell worksheet

How do plantes give off co2​

The following case study is a paraphrase from "Good Clinical Practice. Standard Operating Procedures for Clinical Researchers" (Kolman, J., Meng, P. and Scott, G. editors; John Wiley and Sons publishers, 1998):

“While a study subject and a relative were walking in town one day during the summer, a hanging flower basket fell on a study subjects head, resulting in the study subject falling down and becoming unconscious. The subject’s relative called for an ambulance. On arrival at a local hospital’s Emergency Department, in which the subject regained consciousness but could not recall the event, a x-ray revealed a fractured skull. The subject’s consciousness level at this point was deteriorating and after further tests a subdural hematoma was diagnosed, which was evacuated under general anesthesia. Postoperative recovery was uneventful and progressing well until day four, when the patient developed acute dyspnea (shortness of breath) at rest during visiting time. An emergency lung scan was performed that confirmed a diagnosis of pulmonary embolism. The study subject was anticoagulated and was eventually discharged from the hospital”

1. What is/are the AE/s in the case study?

2. Are there any AEs that are "serious"? If "yes", list them and state why they are serious.

3. What are your thoughts about the AE(s) being related to the study drug (NOTE: we do not know whether the subject is on active drug or placebo)?

what process do plants release water into the air

If an Arctic polar bear is transferred to a zoo in tropical Singapore, it will not be able to survive. What could be the reason for this?

Which of the following best describes why the two organisms you chose are closely related to each other using evidence from the chart?

Which situation is an example of altruistic behavior?(1 point)

A) A child steals an apple.

B) A child shares an apple.

C) A child eats an apple.

D) A child throws away an apple.

What items are used to identify the genetic makeup of an unknown organism?

How does the evidence provided by the graph support the claim that Earth's climate has gradually been warming?

A. The rising sea level is a result of melting ice and the thermal expansion of water.
B. The rising sea level is a result of an increasing rate of all processes of the water cycle.
C. The change in sea level matches the change in atmospheric levels of carbon dioxide.
D. The change in sea level is the cause of increased flooding in low-lying coastal lands.

what is the main point of the villi

On the planet Kermit, in the Muppet population, there are two autosomal loci of interest. The first locus has alleles A and a, and the second locus has alleles B and b. A and B are the dominant alleles at the respective loci. The loci act in an epistatic manner, identical to the way two genes interact to produce coat color in labradors. The phenotype here is muppet hair color. We have the following results:
Muppet hair color as a function of two-locus genotypes
Two-locus genotype Muppet hair color
A_B_ Cookie monster blue
aaB_ Elmo red
__bb Janice blonde
If two doubly-heterozygous Cookie-monster blue-haired muppets mate, and produce 3200 children, which of the follow values most closely represents the expected number of Elmo red-haired offspring? The answer allows for random variation in hair color.
A. 1536
B. 672
C. 1242
D. 200
E. 549

Sex is to as gender is to
A. psychological and sociocultural ; biological
B. attraction ; identity
C. biological ; psychological and sociocultural
D. identity ; attraction

i’ll make brainliest:)))
What do digital signals turn sounds into?

-analog signals
-interference
-continuity
-zeros and ones

Which of the following is an example of regulated waste?
O A. A used napkin
B. A used needle
C. A used blanket
D. A used bed sheet
SUBM

The two DNA bases that are pyrimidines are:

1. A food chain is one part of a food web. Which list is part of the food web shown above?
A diatoms-fish-leopard-seal-orca
B diatomskrill--fish-great white
shark-orca
C copepodsdiatomskrill--fish-
leopard-seal-orca
Dorca--leopard-seal--squid-copepods- diatoms
Help pls will get brainliest