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Alchen [17]
3 years ago
8

Everyone in Squidward’s family has light blue skin, which is the dominant trait for body color in his hometown of Squid Valley.

His family brags that they are a “purebred” line. He recently married a nice girl who has light green skin, which is a recessive trait. Use a Punnett square to determine the possibilities that would result if Squidward and his new bride had children.
List the possible genotypes and phenotypes for their children. *


Can i please have a explenation
Biology
1 answer:
Colt1911 [192]3 years ago
6 0

All their children will have heterozygous genes because squidward is "purebred", or homozygous dominant. His wife has to be homozygous recessive for a recessive trait to show up. Every time you cross a homozygous dominant trait with a homozygous recessive trait, you will get heterozygous kids. This means all of them will have light blue skin.

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An organism adapts to both biotic and abiotic factors in its environment. Decide if each adaptation is in response to a biotic o
Sauron [17]

Answer:

The correct answer is

1. A rabbit living in  a desert has long ears  to disperse heat- abiotic factor.

2. A moth immediately  dives to the ground  when it hears a bat- biotic factor.

3. A lizard stays warm  by sunning itself  on a rock- abiotic factor.

4. A cactus has spines  instead of leaves  to help conserve water- abiotic factors.

5. A petunia is  bright red to  attract hummingbirds- biotic factor.

6. A stick-bug blends in  with trees to hide  from predators- biotic factor.

Explanation:-

The environment includes both abiotic and biotic factors which can affect the ecosystem. Living elements like plants and animals which affect ecosystem are known as biotic factors while the non-living elements which include air, water, temperature are called abiotic factors.

In the given question the options affected by the biotic factors due to bat, due to hummingbirds and due to predators.

Options affected by the abiotic factors due to heat and due to water.

4 0
3 years ago
An elephant has a long, powerful trunk. According to the ideas of Lamarck, how did the trait of long, powerful trunks develop in
Lubov Fominskaja [6]

Answer:

Gradually, as generations of elephants continued to selectively use and develop their trunks.

Explanation:

Jean-Baptiste Lamarck was  famous French Naturalist. He was a soldier, a biologist and an academic. He gave an early theory of evolution known as the theory of Lamarckism.

It was Lamarck who first believed that elephants earlier had small trunks. But eventual when there was scarcity of food and water, the elephants stretched out its trunk to reached out for food such as trees and also water. And as a result their offspring inherited long and powerful trunk.

In his theory of Lamarckism, he believed that the species passes on its traits to the offspring which they acquired through their use in their lifetime. In this case, the elephants might have used their trunks in such a way that they became long and strong over time and they passed tis trait to their babies.

5 0
3 years ago
In humans a gene that has been identifoef as causing a type of skin cancer is the
Gennadij [26K]
It Is The Melanoma Gene .
4 0
3 years ago
Correctly identify each of these definitions or examples as either depolarization or hyperpolarization of the plasma membrane. 1
natulia [17]

Answer:

  1. hyperpolarization
  2. depolarization
  3. hyperpolarization
  4. depolarization
  5. hyperpolarization
  6. depolarization
  7. depolarization

Explanation:

The resting membrane potential is balanced by ion leakage and ion pumping, to get an electrical signal started the membrane potential has to lose its balance. This starts with a membrane channel opening for Na+ since Na+ concentration is higher outside the cell, ions will rush into the cell. This will change the relative voltage inside the cell. The resting potential has a voltage of -70 mV, the sodium cation entering the cell cause it to become less negative. <em>This is known as depolarization.</em>

The concentration gradient for Na+ will continue to enter the cell making the voltage to become positive reaching +30 mV. At the same time, this happens, other voltage-gated channels are also opening, a concentration gradient acts on K+, as well, as it leaves the cell, it takes a positive charge with it making the membrane potential to move back to its resting voltage of -70 mV. <em>This is called repolarization. </em>

For potassium ions to reach equilibrium the membrane voltage needs to be below -70 mV, this leads to a period of <em>hyperpolarization</em> that occurs while the K+ channels are open.

I annexed an image that illustrates this action potential process.

<em>Considering the information given during depolarization there's an increase in the number of sodium leak channels (7) making the inside of the cell more positive (2) increase in the membrane potential (4), this also implies a decrease in the extracellular concentration of potassium (6)</em>

<em>Meanwhile, during hyperpolarization an increase in the extracellular concentration of potassium (3) decreases the membrane potential (1) making the inside of the cell more negative (5).</em>

I hope you find this information useful and interesting! Good luck!<em>       </em>

4 0
3 years ago
The stomach is an example of the level of organization called __
Amanda [17]
Organ level of organization/Organ
5 0
3 years ago
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