In a cross between two heterozygous tall and purple flowers (TtPp x TtPp), what would the
ratio be?

Answer:

9:3:3:1

Explanation:

This question involves two different genes coding for height and flower color respectively. The first gene posseses allele T (dominant) and t (recessive) while the second gene possesses allele P (dominant) and p (recessive).

According to this question, two heterozygous tall and purple flowers are crossed i.e. (TtPp x TtPp). Each parent will produce the following gametes combination:

TtPp - TP, Tp, tP, tp

Using these gametes in a punnet square, the following proportion of offsprings will be produced:

T_P_ (tall, purple) = 9

T_pp (tall, white) = 3

ttP_ (short, purple) = 3

ttpp (short, white) = 1

Hence, the ratio of this cross is 9:3:3:1

ASAP: Fill in the Genotype of each family member in
the blue boxes.

Earlobes are Autosomal Recessive.

What does Mufasa mean by the circle of life? Make a diagram that shows the circle of life. Represent it this way: sun –> producer –> primary consumer –> secondary consumer-> decomposer

PLEASE HELP

Why do radio telescopes tend to produce blurry images? ASAP

A segment of DNA that codes for the ability to make one type of protein molecule is known as a

1. What is true of two organisms that are in the same phylum?
A. They are likely the same species too.
B. They are more closely related than two organisms who are the same genus.
C. They are more closely related than two organisms who are in the same order.
D. They are less closely related than two organisms who are in the same class.

Imagine customers moving into and out of a coffee shop. Which situation
resembles how a reaction in dynamic equilibrium acts?
A. There are the same number of people inside the coffee shop as
outside it.
B. People enter the coffee shop at the same rate as others leave.
C. No people are moving either into or out of the coffee shop.
D. Some people sit down and drink their coffee slowly, while others
drink theirs quickly while standing up.
No

1. What is the Potential energy of an object that has a mass 10 kg and has a height of 50
(m)?

How many MYA was the mass extinction of dinosaurs, ammonoids, and many land plants?

The human X and Y chromosomes

A. are of approximately equal size and number of genes.

B. include only genes that govern sex determination.

C. are both present in every somatic cell of males and females alike.

D. are almost entirely homologous, despite their different names.

E. include genes that determine an individual's sex.

This test/quiz is accepting submissions until Thursday, March 11, 2021 at 8:00 pm

Questions 1-19 of 19 | Page 1 of 1
Question 1 (5 points)
(03.01 LC)

Which is an example of a divergent boundary?

a
Great Rift Valley

b
Himalayan Mountains

c
Peru-Chile Trench

d
San Andreas Fault

Question 2 (5 points)
(03.02 MC)

A soil sample is 35 percent sand, 10 percent clay, and 55 percent silt. Use the following soil texture triangle to determine the type of soil present in this sample.

Soil texture triangle. Silty loam soil is approximately 50 percent or less sand, 30 percent or less clay, and 50 percent or more silt. Sandy clay soil is approximately 45 to 65 percent sand, 35 to 55 percent clay, and 20 percent or less silt. Loamy sand soil is approximately 75 to 95 percent sand, 15 percent or less clay, and 25 percent or less silt. Medium loam soil is approximately 25 to 55 percent sand, 5 to 25 percent clay, and 25 to 50 percent silt.
Public Domain

a
Silty loam

b
Sandy clay

c
Loamy sand

d
Medium loam

Question 3 (5 points)
(03.03 LC)

Which gas is the least abundant in Earth's atmosphere?

a
Argon

b
Carbon dioxide

c
Helium

d
Neon

Question 4 (5 points)
(03.02 MC)

In which of the following scenarios does weathering occur but not erosion?

Lichens growing on boulders dissolve minerals in the rocks.
Sand carried downstream by a river gradually settles to the riverbed.
Wind blowing against a cliff face causes sediment to fall to the ground.
a
I only

b
II only

c
III only

d
I and II only

Question 5 (5 points)
(03.03 MC)

How would the Coriolis effect alter movement of an air mass flowing from a higher to a lower latitude in the Southern Hemisphere?

a
It would deflect the path of the air mass to the east.

b
It would deflect the path of the air mass to the west.

c
It would deflect the path of the air mass to a lower altitude.

d
It would deflect the path of the air mass to a higher altitude.

Question 6 (5 points)
(03.02 MC)

A fast-growing town requires a new source of power. Because the town is located by a fast-flowing river, the town council votes to construct a hydroelectric power plant. How might this activity affect the local watershed?

a
The hydroelectric plant will likely flood the area behind the dam that is constructed.

b
The hydroelectric plant will likely pollute the water flowing down the waterfall.

c
The hydroelectric plant will likely pollute the air above the waterfall, leading to acid rain.

d
The hydroelectric plant will likely quit operating in the summer when the river dries up.

Question 7 (5 points)
(03.05 MC)

The state of California experiences periodic occurrences of severe drought conditions. Which weather phenomenon most likely causes this, and why?

a
El Niño, because of weakening of trade winds

b
El Niño, because of strengthening of trade winds

c
La Niña, because of increased upwelling of cooler waters

d
La Niña, because of decreased upwelling of cooler waters

Question 8 (10 points)
(03.05 HC)

The map below shows winter storm advisories in different parts of the U.S. (indicated in light purple and bright pink). There is a flood watch (indicated in green) due to severe thunderstorms and heavy rainfall:

The map of the United States is shown. The light purple and bright pink colors in the map indicate a winter storm advisory along the Appalachian Mountains, extending north. The same two colors appear above the Rocky Mountain Range near West Virginia, Utah, and Wyoming. The dark green color is a flood watch south of the Appalachian Mountains.
© National Weather Service 2020

Refer to the map to answer the following questions:
Identify the location(s) of upcoming winter storms in the continental U.S.
Identify the location(s) of upcoming heavy rains or flood in the continental U.S.
Earth's geography, climate, and weather:
Describe the general climate of the identified locations.
Explain how the geography of the identified locations affects precipitation in their region.
In mountainous regions, there are increases in global temperatures that affects that region's climate. Propose a solution for communities in these regions to be able to tolerate their unique climate.
Your answer:
Question 9 (5 points)
(03.05 LC)

Warm ocean water is carried eastward by wind towards South America to cause changes in global climate. Which of these events is described by the statement?

a
El Niño

b
La Niña

c
Land breeze

d
Sea breeze

Where do sperm go after leaving the vas deferens?  A. Seminiferous tubules  B. Urethra  C. Vas deferens  D. Ejaculatory duct

Potato crops are grown for their carbohydrate content.
Describe how you could safely test the two species of potato to compare their carbohydrate content.

test for starch

test for reducing sugars


8 mark question - IGCSE

how does a plant cell look under a microoscope

HELP! Label the image of the DNA with the correct name of the part!

define polymer

simple

Answer ASAP​

Which of these is a response to an internal stimulus?

A. A sunflower turns to face the rising sun.
B. A cucumber tendril wraps around a wire.
C. A pine tree knocked sideways in a landslide grows upward in a bend.
D. Guard cells of a tomato plant leaf close when there is little water in the roots.

How does the mutated protein differ from the original protein?

Which of the following organisms is a producer?

A. Alligator
B. eagle
C. Sunflower
D. Fish​

What do mitochondrial and thylakoid membranes have in common?

5. Write the levels of organization in order from MOST SIMPLE to MOST COMPLEX. Use the words: organism, organ, cell, tissue, and organ system. ​

An object with a kinetic energy of 200 J and Potential energy of 300 J, has a mechanical energy of what?

In humans, the "A" allele codes for Type A blood, the "B" allele codes for Type B blood, and the "o" allele codes for Type O blood. "A" and "B" are both dominant to "o." A and B are codominant to each other.

What is the genotypic ratio of a cross between a mother who is heterozygous Type A and a father who is heterozygous Type B?

A. 1 AB : 1 A0:1 Bo : 1oo

B. All AB

C. 2 AA: 2 BB

D. 1 Ao: 2 00:1 Bo​

Please help on this

Name three elements used to date fossils with absolute dating

Think of an object, person place at home that functions similar to the vacuole.

"________" she said, collapsing with exhaustion. "I'm glad that's over with!"
a Hey!
b Oh, no!
c Phew!
d Wow!

helppppp meeeeee plsssss

HELP ASAP!! I NEED IT

What does natural selection act on?

During meiosis, homologous chromosomes exchange genetic material. This exchange of
genetic material -