Biology, 05.07.2020 14:01, Qpaoswp5914

A dihybrid cross SS tt × ss TT is used to make an F1 generation. In the cross S is dominant, but T and t exhibit incomplete dominance. Assuming independent assortment, how many phenotypic classes are expected in F2 when crossing F1 individuals to each other?

Answers: 3

Show answers

Answers

answered: jaylenmiller437

Explanation:

Given that:

A dihybrid cross SS tt × ss TT is used to make an F1 generation

where;

S = dominant

T and t exhibit incomplete dominance.

According to Mendelian's Law of Independent Assortment.

The cross between SS tt × ss TT will be as follows:

If self crossing occurs first, the following traits will be used for the F1 cross

S S

t St St

s s

T sT sT

St St St St

sT SstT SstT SstT SstT

Thus; the F1 generation produce offsprings that are all heterozygous SstT

For the F2 generation now;

We have

SsTt × SsTt

S s

T ST sT

t St st

ST St sT st

ST SSTT SSTt SsTT SstT

St SSTt SStt sSTt sStt

sT SsTT SstT sSTT sstT

st SsTt Sstt ssTt sstt

From the above F2 generation; we have the following offspring.

SSTT 3 = 3/16 = 0.1875 = 18.75 %

SStT 6 = 6/16 = 0.375 = 37.5%

Sstt 3 = 3/16 = 0.1875 = 18.75 %

ssTT 1 = 1/16 = 0.0625 = 6.25%

ssTt 2 = 2/16 = 0.125 = 12.5%

sstt 1 = 1/16 = 0.0625 = 6.25%

answered: Guest

Id so

answered: Guest

the answer is c most of the fortnite players usually buy v bucks to get the battle pass and other cosmetics but some players who are referred to as "no skins" don't buy skins and are usually noobs.

Other questions on the subject: Biology

Biology, 21.06.2019 18:00, gora2005

1. the passing of is the basis of heredity. 2. our encode the instructions that define our traits. 3. each of us has thousands of genes, which are made of and reside in our chromosomes. 4. in addition to our genes, the we live in also define our traits. 5. humans have two complete sets of chromosomes. 6. when parents conceive a child, each parent contributes set of chromosomes. 7. every child receives of its chromosomes from the mother and half from the father. 8. this transfer takes place at when the father’s sperm joins the mother’s egg. 9. while most cells in our bodies have two sets of chromosomes, or a total of egg and sperm each have chromosomes. 10. when egg and sperm unite they create a single cell called a 11. each parent contributes complete set of chromosomes to their child. 12. since the parents contribute the chromosomes to each new child, every child inherits a unique set of chromosomes. 13. as a result, every baby will have a combination of traits.

Answers: 1

continue

Biology, 21.06.2019 22:30, kaylin28

What happens whenever a net force acts on an object

Answers: 1

continue

Biology, 22.06.2019 08:30, mariaaalopezz

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

Answers: 1

continue

Biology, 22.06.2019 11:00, isaiahromero15

Identify two examples of chemical reactions that you have encountered during the last week. identify an exothermic and endothermic reaction. explain.

Answers: 1

continue

Do you know the correct answer?

A dihybrid cross SS tt × ss TT is used to make an F1 generation. In the cross S is dominant, but T a...