answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
geniusboy [140]
2 years ago
8

For each cross, describe whether genetics or temperature determines the sex of progeny produced from eggs incubated at 35 degree

s celsius. For each cross, describe whether genetics or temperature determines the sex of progeny produced from eggs incubated at 24 degrees celsius.

Biology
1 answer:
goldenfox [79]2 years ago
3 0

<u>Answer and Explanation</u>:

In reptiles, there are two mechanisms of sex determination:

-Genetic mechanisms, determined at the fertilization moment

-Environmental mechanisms, which are temperature-dependent.

Temperature is an environmental factor that affects different processes in organisms at a molecular level, biochemical level, or physiological level. In reptiles such as lizards, snakes, turtles, crocodiles, among other, temperature influences their embryonary development, their growth, daily activities, reproduction rate, sex determination, and etc.

In lizards, it occurs that whenever eggs are incubated at low temperatures, between 22 º and 27ºC, they produce a higher percentage of males, while eggs exposed to higher temperatures, 30ºC and above, produce more females. There are only a few degrees of temperature at which exposed eggs produce males and females equally.

The importance of knowing the mechanism of organisms´ sex determination lies in how climate change may be affecting wild populations due to fluctuations in temperature.

In the exposed example, the first cross between ZZ males and ZW females, genetics is the mechanism that determines the sex of progeny produced from eggs incubated at 24 and 35 degrees celsius. While in the second cross between ZZmales and ZZ females, temperature determines the sex of progeny produced from eggs incubated at 24 and 35 degrees celsius. This is, eggs exposed to temperatures below 28ºC will produce only males, so there won't be any female in the progeny. But eggs incubated at 30ºC and over will produce females, as shown in the table.

You might be interested in
Chemical mechanisms that can turn off or reduce an enzyme are _____.
jok3333 [9.3K]
The answer should be competitive inhibitors
8 0
2 years ago
Read 2 more answers
Dr. Ben Dantzer, a faculty member here at Michigan, studies red squirrels that live in the boreal forest. The boreal forest cont
seraphim [82]

Answer:  herbivore, eukaryote, primary consumer

Explanation:

The red squirrel can be described by the following features.

1. Herbivore: A herbivore is an animal which is dependent upon the plant and their products for it's food requirement. Here, the red squirrel is the herbivore because it is dependent upon the spruce tree seeds for their food requirement.

2. Eukaryote: A eukaryotic organism is the one which has well define nucleus and encloses the genetic material in the nucleus. The red squirrel is a complex eukaryotic organism.

3. Primary consumer: In a food chain a primary consumer is an organism which is dependent upon plants and their food products for energy and food needs. The red squirrel is the primary consumer this is because of the fact that it consumes on the seeds of the spruce trees.

3 0
1 year ago
Read 2 more answers
Anyone have the answer???????????
marysya [2.9K]

Answer:

34

Explanation:

Electron transport begins with serval molecules of NADH and FADH2

7 0
2 years ago
The major difference between starch, glycogen, and cellulose and their adjacent glucose subunits is the ________.
sveta [45]

Answer:

<u>Starch</u> is the storage form of glucose (energy) in plants and the glucose molecules are linked by alpha 1,4 glycosidic linkage.

<u>Cellulose </u>is a structural component of the plant cell wall and glucose molecules are linked by beta 1,4 glycosidic linkage.

<u>Glycogen</u> is the storage form of glucose (energy) in animals and glucose molecules are linked by alpha 1,6 glycosidic linkage.

Explanation:

All of these sugars are polysaccaride sugars containing large number of glucose subunits.

Starch is a polysaccharide extracted from agricultural raw materials. It contains amylose and amylopectin. Amylose is an un-branched chain polymer of D-glucose units while amylopectin is a branched chain polymer of D-glucose units.

Glycogen is the storage form of glucose in animals, It is stored in muscles and liver and it is a branched polysaccaride.

Cellulose is the storage form of glucose in plants and leaves.

8 0
1 year ago
What do sphincter muscles do? a. Trigger hormone release. b. Control peristalsis. c. Secrete digestive juices into the GI tract.
Maksim231197 [3]

Answer:

Answer is E.

Explanation:

Generally, sphincter are circular or ring - shaped muscles, surrounding the natural opening in the body. They control the movement of substances by opening and closing through expansion and contraction.

There are many sphincter in the body, examples are

* Cardiac sphincter...found at the upper area or portion of the stomach.

* Pupilary sphincter..found in the iris of the eye.

* Glisson's sphincter...controlling the secretion of the gall bladder,pancrease and the liver.

6 0
2 years ago
Other questions:
  • The book uses the example about "no animals are allowed in the airport terminal except assistance animals" to illustrate the poi
    11·1 answer
  • As a mechanism of evolution, natural selection can be most closely equated with __________.
    13·1 answer
  • What type of sedimentary rock is formed from weathered particles of rocks and minerals?
    14·2 answers
  • Suggest workable solution to the problem of inhumane farming methods
    5·2 answers
  • Note the following values
    7·2 answers
  • Two mule deer lock antlers as they demonstrate strength and worthiness to a female mule deer . The winner of the Barthes will ma
    11·1 answer
  • Meiosis guarantees that in a sexual life cycle, offspring will inherit one complete set of chromosomes (and their associated gen
    7·1 answer
  • The only direct connection between the pectoral girdle and the axial skeleton is where the A) clavicle articulates with the hume
    15·1 answer
  • A student constructs a Venn diagram to compare the organelles in plant and animal cells. Venn Diagram of Plant and Animal Cells
    12·2 answers
  • 2. Which of the following best describes the genetic material a person receives from his or her father?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!