Please helpppp !
Mendel studied a total of seven traits of garden peas. His experiments were
successful because the pairs of factors for the traits he studied were on
A. the same plant
O
B. the same chromosomes
O
C. two different chromosomes
O
D. seven different chromosomes

i think the answer is a

Answer:

seven different chromosomes

Explanation:

A researcher attempts to use a segment of ribosomal RNA as a molecular clock to calculate the date of the last common ancestor of two species. He finds that the two species diverged from a common ancestor 150 million years ago. These particular species have abundant fossil records that strongly suggest that these species diverged 100 million years ago. Which of the following answer choices best describes a reason for the discrepancy in the date of the last common ancestor of these species?

A. Ribosomal RNA is not a reliable molecular clock and should not be used for dating.
B. The neutral mutation rate used in calculating the last common ancestor date may not have been accurate.
C. It is highly likely that the two organisms did not share a common ancestor, so the results are invalid.
D. A large portion of the ribosomal RNA is not vital to survival, so it is not likely to be well preserved.

A newborn child was brought to the hospital nursery before he was marked with his parents' names. The hospital workers must use what they know
about genetic outcomes to determine whom the child belongs to. They use his traits to help them. The baby has freckles (F dominant), and attached
earlobes (I recessive). They believe that the baby most likely belongs to a couple in which the man has attached earlobes but no freckles. It is known that
the woman is heterozygous for freckles and earlobe type.
Complete the Punnett square below to determine the probability that the child belongs to this couple. List the possible combinations of the father's
alleles across the top and the possible combinations of the mother's alleles down the left side. Then write your answer in the space below. Include a
brief statement explaining how you reached your answer.

Why do the cells inside of your stomach get replaced every few days , but other cells in your body can live for weeks, months or even years?

The ability to do work or cause change is called
energy
O force
O power
Owork

Help please I need a. and b. For number 2

If the eyes and jaws of a corpse appear stiff, about how much time has likely
passed since death?

What do tuberculosis, HIV, and malaria all have in common?
Group of answer choices

A. They all can be spread through body fluids, such as blood

B. They all respond to antibiotics.

C. They are all spread by parasites.

D. They are all non-transmissible diseases.

What two things make blood pressure? *

A. pressure caused by contraction of heart ventricle and pressure exerted on blood by
walls of blood vessels

B. pressure caused by contraction of heart atrium and pressure exerted on blood by walls of blood vessels

C. pressure caused by stressful workload and pressure exerted by teachers

D. pressure caused by contraction of heart ventricle and pressure due to gravity

7. Which of the following is NOT found in bacteria? *
a) Cell wall
b) Membrane bound nucleus
Ribosome
d) Plasma membrane

How do the cells and organs of the Skeletal and Muscular system work together?

match each term to its definition

What odd thing happens at Mercury’s perihelion to the sun ?

Given the following phylogenetic tree, which evolutionary event occurred most recently?

A.) development of different forms of symmetry.

B.) development of tissues.

C.) each of these traits evolved at the same time.

D.) protostome and deuterostome development.

The mechanism through which a parents gene is turned off, through the attachment of a methyl group to that parent's DNA is called :

A) methylation

B) mutation analysis.

C) cross contamination.

D) spermatogenesis or oogenesis.

Contaminated water called leachate from _____ can pollute groundwater.
Group of answer choices

A.solid waste incinerators

B.bioplastics

C.compost bins

D.sanitary landfills

E.recycling centers

Felicia's teacher gives her the following list of types of organisms:
1. Ferns
2. Yeasts
3. Algae
4. Insects
Felicia needs to identify the kingdom for each type of organism. In what order could she list the
kingdoms for organisms 1 through 4?
♥︎

Which of the following is not a layer of hair?
Group of answer choices

Cuticle

Root

All the above are layers of hair

Cortex

Medulla

explain how the products of photosynthesis are stored leaves!​

Natural selection is affected by which three factors? A. reproduction B. evolution C. variation D. overproduction E. mechanism F. competition

Why is it essential that threatened
species compete for resources successfully

1. Water is the only substance that exists in nature as a solid, liquid, and gas
at Earth's

In a co-dominant type of inheritance, a heterozygous A blood type female
is crossed with a homozygous B blood type male. What are the chances of
producing an offspring that is A blood type?
0%
25%
50%
75%

Examine the pattern of the wave shown. What is true about the amplitude and wavelength of the wave when the pattern changes?

which statement would most likely be used to describe variation

Sam doesn't feel like he's being treated fairly by his parents. He wants to stay out
later, but they want his curfew set at 10PM. What is causing this conflict?
dispute over resources
differing values
Opower struggle
Omiscommunication

B vitamins and vitamin C are water soluble vitamins.
O A.
True
B.
False

What are the different possible gametes for AABBDd?

HELP ASAP i need this to pass my grade

this is for science, and if i get the questions right, I pass, but the teacher never taught us the lesson, idrk y. so i really need help:( Im giving away 11 points so please give me your best answers ;)



1. As an astronaut travels from the surface of Earth to a position that is four times as far away from the center of Earth, based on the Law of Gravity which of the following statement is true?



a. mass remains the same and the gravitational pull from Earth decreases


b. weight remains the same and the gravitational pull from Earth changes


c. weight increases and the gravitational pull from Earth stays the same


d. mass decreases and the gravitational pull from Earth increases


2. A satellite is sent into orbit around the Earth, In which of the following situation would the gravitational force be the greatest?



A. 1200 lb satellite orbiting 150 miles above Earth’s surface


b. 850 lb satellite orbiting 150 miles above Earth’s surface


c. 850 lb satellite orbiting 1500 miles above Earth’s surface


d. 1200 lb satellite orbiting 1500 miles above Earth’s surface



3. High and low tides are the regular pattern of rising and sinking ocean-water levels. They are caused when the sun’s gravity and the moon’s gravity pull on ocean water. The moon’s gravity has a greater effect on Earth’s oceans than the sun’s gravity. Why would the moon have a greater effect than the sun?



a. The moon has less mass than the sun.


b. The moon is closer to Earth than the sun.


c. The moon is not as hot as the sun.


d. The moon has less mass than Earth.




4. Which statement about the universality of gravity is false?



a. The gravitational force between two objects depends only on their masses.


b. Any two objects that have mass also have a force of gravity acting between them, no matter how far apart they are.


c. The gravitational force between two objects increases if the objects move closer together.


d. The gravitational force between two objects increases if mass is added to one object.

The cartilage on the ends of long bones serves which of the following functions? *

Father
B b
Mother
B
b
BB
Bb
Bb
bb
B=dominant
b = recessive
The gene for brown hair (B) in Goats
Consider the possible genotypes of the offspring of two heterozygous brown goats. The ratio of brown to white
offspring in this case would be
A)
1:3.
B)
2:2
3:1
D)
3:4