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4 years ago

Of the molecules sif4 and sibr4, which has bonds that are more polar

1 answer:

eduard4 years ago

7 0

Of SiF4 and SiBr4, the atom SiF4 is more polar. This is because the cation of both molecules are Silicon, but the anions of each are different. In SiF4, the anion is Fluorine, which is more electronegative than the Bromine in SiBr4, which creates a larger dipole, which results in a more polar molecule.

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In rabbits, short hair is due to a dominant allele, S, and long hair to its recessive allele, s. Black hair is due to a dominant

Natali5045456 [20]

Answer:

SsBB x SsBB

SsBB x SsBb

Explanation:

SS- short hair

ss - long hair

BB- black hair

bb- white hair

Total the number of offspring produced = 2518+817=3335

Where 2518= short haired, black offspring SSBB or SsBb

817= Longed Hair, black offspring ssBB or ssBb

To get the offspring proportion for short hair black offspring

2518/3335×100 = 75.5%

long-haired, blackoffspring =817/3335×100 = 25%

This gives ratio of 3:1 as against the proposed dihybrid phenotypic ratio of Mendel experiment 9:3:3:1

Now, if you remember a dihybrid cross results in 9:3:3:1 phentoype ratio. That is when both parents are heterozygous for both alleles. So we can rule that out since it doesn't match our 3:1 ratio.

Since all the offspring are black , it means one parent is homozygous dominant for black and the other parent is either homozygous or heterozygous for the black allele.

Since the ratio is 3:1, for the hair length

That leaves us with the short hair. Since the ratio is 3:1, both parents are heterozygous for hair length.

Therefore, the possible parental genotype is

SsBB x SsBB

SsBB x SsBb

4 0

3 years ago

What approximate percentage of lymphocytes is seen at age 4?

mr_godi [17]

Answer:

Blood is composed of several types of cells:

RED BLOOD CELLS: They are the oxygen carriers of the body i.e. they pick up the oxygen as the blood goes through the lungs & release of oxygen to cells.Also known as erthrocytes
WHITE BLOOD CELLS: also known as leukocytes.They are the soldiers of the body.Aims at fighting against the infections ( caused by bacteria & virus)

PLATELETS : helps in the blood clot in response to any wound or injury

There are five types of white blood cells & approx %age they made up in blood are:

•Neutrophils (55% to 70%)

•Band neutrophils (0% to 3%)

•Lymphocytes (20% to 40%)

•Monocytes (2% to 8%)

•Eosinophils (1% to 4%)

•Basophils (0.5% to 1%)

When children are more than 4 year old they have higher % age of lymphocytes than the adults do.

4 0

3 years ago

The amygdala consists of emotion-linked neural clusters in the

sp2606 [1]

Answer:

Medial temporal lobe of brain

Explanation:

It is a main part of limbic system and process emotions. It is a cluster of neurons called as basolateral complex that are specialized for emotion processing.

7 0

3 years ago

When most liquids are frozen, the molecules get closer together. In water, however, hydrogen bonds cause individual water molecu

docker41 [41]

I would think the answer is density.

5 0

3 years ago

Chytrids have some unique characteristics that are different from the other groups of fungi. What characteristics make them uniq

slava [35]

Answer:

C.Their reproductive cells have flagella.

E.They live in wet places.

Explanation: Just did the assignment

3 0

4 years ago

Read 2 more answers