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4 years ago

How do most autosomal recessive alleles that lead to lethal diseases persist in human populations?

1 answer:

3 0

Autosomal recessive alleles that lead to lethal diseases persist in human populations because these diseases happen after people have their children. They get inherited from both parents, one from each. The two mutated genes carry a 25 percent chance in having two normal genes in the child, a 25 percent of two recessive genes in an affected child and a 50 percent chance of an unaffected child who also is a carrier.

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1. Why do you think temperature is the measure of the "average"

Anit [1.1K]

Answer:

Temperature is the measure of the average energy of motion of all the particles present in a substance because particles of a substance moves due to the presence of kinetic energy.

Explanation:

Kinetic energy is a type of energy that is present in an object due to its motion. When temperature of a substance is increased, the particles absorb heat energy from surrounding environment and starts motion. This motion of particles due to the absorption of heat energy is called kinetic energy. So that's why temperature is considered as a tool to measure average energy of a motion.

8 0

4 years ago

100 POINTS!!! Plz describe this (and don't answer this just for the points like actually help me this is 60% of my grade) I coul

Lerok [7]

<h3>Thank you for asking your question!</h3><h3>Have any more questions? Just ask!</h3><h3 />

Answer:

Mitochondria:

An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. Also known as the 'powerhouse of the cell.'

Cell wall:

A cell wall is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism.

Nucleus:

The positively charged central core of an atom, consisting of protons and neutrons and containing nearly all of the cell's mass.

Golgi bodies:

The Golgi apparatus, also known as the Golgi complex, Golgi body, or simply the Golgi, is an organelle found in most eukaryotic cells. Part of the endomembrane system in the cytoplasm, it packages proteins into membrane-bound vesicles inside the cell before the vesicles are sent to their destination.

ER (Endoplasmic Reticulum):

A network of sac-like structures and tubes in the cytoplasm (gel-like fluid) of a cell. Proteins and other molecules move through the endoplasmic reticulum. The outer surface of the endoplasmic reticulum can be smooth or rough.

Cell Membrane:

The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.

Ribosomes:

A sphere-shaped structure within the cytoplasm of a cell that is composed of RNA and protein and is the site of protein synthesis. Ribosomes are free in the cytoplasm and often attached to the membrane of the endoplasmic reticulum. Ribosomes link amino acids together in the order specified by the codons of messenger RNA molecules to form polypeptide chains.

Cytoplasm:

The cytoplasm provides a medium for the organelles to remain suspended. The cytoplasm acts as a buffer and protects the genetic material of the cell and also the cellular organelles from damage caused due to movement and collision with other cells. Cytoplasm is a thick solution that fills each cell and is enclosed by the cell membrane. It is mainly composed of water, salts, and proteins. In eukaryotic cells, the cytoplasm includes all of the material inside the cell and outside of the nucleus.

Hope this helps!

6 0

3 years ago

Read 2 more answers

The weather in a particular region can be impacted by many things. Some factors that impact the weather are (check all that appl

Alexxx [7]

Answer:

all but last

Explanation:

because if it rains then the landforms can change bodies of water can fill

3 0

2 years ago

Question 6 of 25

kogti [31]

Answer::-

B. Water and nutrients absorbed by roots to the stem and leaves.

Xylem constitutes of the complex tissues and plays the role of conducting tissue for water and minerals from root to the stem and leaves (shoot).

6 0

3 years ago

What will happen to ATP production when the electron transport chain is disabled? Explain your answer.

Tanya [424]

It would be decreased significantly. The ETC makes 28 molecules of ATP so if it is disabled then you would only get your net gain of 2 ATP from glycolysis

7 0

3 years ago