Suppose that a dominant allele (P) codes for a polka-dot tail and a recessive allele (p) codes for a solid colored tail. In addition, suppose that a dominant allele (L) codes for long eyelashes and a recessive allele (l) codes for short eyelashes. If two individuals heterozygous for both traits (tail color and eyelash length) mate, what's the probability of the phenotypic combinations of the offspring? A. 1:1 ratio (half are polka-dot tails and long eyelashes; half are solid tails and short eyelashes) B. 1:1 ratio (half are polka-dot tails and short eyelashes; half are solid tails and long eyelashes) C. 9:3:3:1 ratio (9 polka-dot tails and long eyelashes, 3 polka-dot tails and short eyelashes, 3 solid tails and short eyelashes, 1 solid tail and short eyelash) D. 9:3:3:1 ratio (9 polka-dot tails and short eyelashes, 3 polka-dot tails and short eyelashes, 3 solid tails and long eyelashes, 1 solid tail and long eyelash)

Answers

Answer 1

Answer: Heterozygous is when an individual has two different alleles at any location. In this example, each parent will have Pp for tail type and Ll for eyelash length.
The punnet square for couple will look like this

PL    Pl   pL   pl

PL PPLL PPLl PpLL PpLl

Pl   PPLl PPll PpLl Ppll

pL PpLL PpLl ppLL ppLl

pl   PpLl Ppll ppLl ppll

Of the sixteen genotypes listed, the following phenotypes will result

Polka dot tail with long eyelashes 9
Polka dot tail with short eyelashes 3
Solid tail with long eyelashes 3
Solid tail with short eyelashes 1

I want to say the answer is (C), but it looks like there might have been an error in the question where it says 3 solid tails, short eyelashes and then 1 solid tail with short eyelashes

Answer 2

Answer:

9:3:3:1 ratio (9 polka-dot tails and long eyelashes, 3 polka-dot tails and short eyelashes, 3 solid tails and long eyelashes, 1 solid tail and short eyelash)

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What is aerobic and anaerobic respiration ?

Answers

Aerobic respiration requires oxygen to occur, and then it releases a large amount of energy. Anaerobic respiration occurs when glucose breaks down without any oxygen to produce a little energy, and lactic acid. Anaerobic respiration occurs when we exercise vigorously and the heart and lungs are not able to provide enough oxygen.

Aerobic respiration- the process of respiration which takes place in the presence of oxygen. Glucose breaks and high energy is produced.
Example-normal breathing
Anaerobic respiration- the process of respiration which occurs in the absence of oxygen. Anaerobic respiration generally concludes with less energy
Example- when we run for a long time the lungs and heart do not get enough oxygen and hence we undergo anaerobic respiration
We humans undergo both aerobic and anaerobic respiration
Hope it helps u

Are may beetles dangerous?Are May Beetles are dangerous?
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Why or Why Not?

Answers

No
No
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The species name of the African elephant is Loxodonta africana. In the species name, africana is the __________. a. family b. genus c. specific epithet d. domain

Answers

In the species name Loxodonta africana, "africana" is the specific epithet. Therefore, option (C) is correct.

What is a specific epithet?

The genusname and the specific epithet are the two components that make up the binomial nomenclature that is utilized for naming species. Combined, these make up the name of the species. In this particular instance, the name of the genus is Loxodonta, and the specific epithet is africana.

It is possible to differentiate between distinct species that belong to the same genus by making use of the particular epithet. On the other hand, the name of the genus is something that all of the species that belong to that genus share.

Learn more about specific epithet, here:

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The scientific name for animals starts with the Kingdom then goes down the list: phylum, class, order, family, genus then the specific epithet, therefore the africana in Loxodonta africanawould be C)specific epithet.(Note: Scientific names should always be italicized, expect for when the family is introduced. For example, the family for the African Elephant would be Elephantidae, starting always with a capital letter as the genus should be as well but not italicized.)

In the context of the difference threshold, _____ is the principle that two stimuli must differ by a constant proportion to be perceived as different.

Answers

Answer:

The answer is Weber's law

Explanation:

In the context of the difference threshold, Weber's law is the principle that two stimuli must differ by a constant proportion to be perceived as different.

- Weber's Law states that "for the difference to be perceptible, two stimuli must differ by a constant proportion, not a constant amount".

There are two checkpoints during the cell cycle that regulate cell division. They are right before the _____ phase and _____ phase. S; M G1; G2 S; G1 M; G2

Answers

Two checkpoints during the cell cycle that regulate cell division are right before S phase and M phase.

Cell cycle checkpoints are control mechanisms necessary for proper cell division. In the cell cycle, there are two checkpoints: the G1 checkpoint and the G2 checkpoint. The G1 checkpoint is right before the S phase, and G2 checkpoint is right before the M phase.
If something is wrong at the G1 checkpoint, the cell will not enter the cell cycle. It is important to be delayed before cell enters S phase where DNA replication commences.
The G2 checkpoint is a DNA damage checkpoint and if DNA is damaged, entering the cell cycle is delayed before mitosis (M phase).

Answer:Sphase and Mphase

Explanation:

Roundworms are pseudocoelomic. This means that they have A. organs, but no true body cavity. B. a true body cavity, but no organs. C. both organs and a true body cavity. D. neither organs nor a true body cavity.

Answers

Answer: The correct answer is-

A. organs, but no true body cavity.

Based on the presence of body cavity ( also called coelom), multicellular animals can be classified as acoelomates ( no true body cavity), coelomates ( having true body cavity), pseudocoelomates ( false body cavity).

Roundworms are pseudocoelomic. This means that organs are present but the body cavity is not lined by mesodermal epithelium.

Body cavity is present between the external wall of body and the intestine and it baths the different body organs.

Thus, option A) is the right answer.

Answer:

Option A

Explanation:

All bilateral organisms have coelomates (cavity). However a Pseudocoelomate organism have a false cavity. By false cavity, we mean that there is a body cavity which is filled with fluid and all internal organs bathe in it including alimentary canal system , reproductive system etc. Unlike a coelom, Pseudocoelomate organism do not have body cavity completely lined with mesodermal cells.

hence, option A is correct

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