1answer.
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
BabaBlast [244]
3 years ago
14

With independent assortment, the ratio of genotypes in the F2 generation of a cross between true-breeding strains (AA bb x aa BB

) can be described as 1:2:1:2:4:2:1:2:1. To what genotype does the "4" in the ratio refer?a. AA Bb
b. Aa BB
c. Aa Bb
d. None of the answer options is correct.

Biology
1 answer:
MariettaO [177]3 years ago
7 0

Answer:

c. Aa Bb

Explanation:

The parents were pure breeding with genotypes AAbb and aaBB. A cross between AAbb and aaBB would produce AaBb genotypes in F1 progeny. Two F1 strains would be crossed to produce F2 progeny. The F2 progeny would have the genotype ratio= 1:2:1:2:4:2:1:2:1.

Out of all the obtained genotypes in the F2 generation, the proportion of "AaBb" genotype was 4/16. Therefore, "4" in the given ratio represents the genotype "AaBb".

You might be interested in
Which of the following is not a component of the hepatic triad found at the edges of a liver lobule?
goldenfox [79]

Answer: c) central vein.

Explanation:

The liver is an organ that is present both in humans and in vertebrate animals. It secretes the bile, essential for the digestion of fats, and it also has many other functions, including the synthesis of plasma proteins, storage of vitamins and glycogen and detoxifying function. It is responsible for removing various substances from the blood that may be harmful to the body, including alcohol, making them harmless.

The liver is divided by the sickle cell ligament into two main lobes, right and left. <u>There are two other smaller lobes, the square lobe and the caudate lobe</u>.

The hepatic triads are triangular areas located at the angles of the hepatic lobules, made up of a lax conjunctive stroma. <u>They contain a branch of the hepatic artery</u> (that irrigates the liver<u>),</u> <u>a hepatic portail vein</u> (a thick blood vessel that carries blood from the gastrointestinal tract and spleen to the liver so that nutrients are metabolized<u>)</u> and <u>a bile duct</u> (transports bile into the small intestine). Therefore, it does not contain a central vein.

5 0
3 years ago
A cleavage furrow forms along the midline (equator) of a cell at
elena55 [62]

Answer:

true

Explanation:

cytokinesis is when the two cells start pinching to make them seperate

7 0
3 years ago
Atoms are neutral and have no charge but when they lose or gain electrons they gain a negative or positive charge and are then c
noname [10]
They can either be protons (positive) or electrons (negative)

5 0
3 years ago
Because global temperatures are ________[1], some species are seeking out ______[2] elevations in the Himalayas to colonize. Sci
Vsevolod [243]

Answer:

increasing[1], higher[2], space[3], food[4], climate change[5].

Explanation:

Because global temperatures are <u>increasing[1]</u>, some species are seeking out <u>higher[2]</u> elevations in the Himalayas to colonize.  Scientists were worried that these organisms would not have enough <u>space[3]</u> to live, but they have found that there is adequate <u>food[4]</u> at higher elevations. This movement may help these organisms survive the effects of <u>climate change[5].</u>

(Although am positive about 1, 2 and 5, you will need to double check 3 and 4.  What I can tell you is that I don't think lifespan has to do with 3 or 4.  I chose space and food simply due to the thought that more species moving to higher elevations allows for less space to live, but more prey to be hunted easier.)

4 0
1 year ago
Read 2 more answers
The feelings of heat and pain associated with eating hot peppers are primarily due to what mechanism?.
Ierofanga [76]

Answer: A specific chemical binding to nociceptors

Explanation:

7 0
2 years ago
Other questions:
  • Which example illustrates adhesion? A.water droplets sticking to a window B.water forming a large drop C.water evaporating from
    7·3 answers
  • Which processes contribute to the formation of chemical sedimentary rocks?
    12·2 answers
  • g Fructose 2,6-bisphosphate is a _______________ regulator of glycolysis and a _________________regulator of gluconeogenesis.
    7·1 answer
  • A human skin cell contains 46 chromosomes.A frog sperm cell contains 12 chromosomes.which pair of number shows the chromosomes n
    12·1 answer
  • A genetic counselor is consulted by a young man who is worried about developing Huntington's disease, an inherited disorder caus
    13·1 answer
  • What tool is used to determine the elements that are in a star
    14·1 answer
  • Plant and animal cells differ in a variety of ways. Plants have a special structure that helps them produce their own food. With
    9·2 answers
  • The diagram below shows four different living organisms.
    14·2 answers
  • The part of Earth that supports life is a(n) ____.
    15·2 answers
  • NEED ANSWER FAST!!!!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!