Choose the phrase that best describes West Germany after World War II.

5 Disorders of the Nervous System.<br>(i need it ASAP)<br>PLSSS

Annette [7]

Answer:

1.)Parkinson's disease 2.)Multiple sclerosis 3.)Alzheimer's disease 4.)Amyotrophic lateral sclerosis 5.)Huntington's disease

Please let me know if it's correct.

8 0

2 years ago

During meiosis i, assuming no crossing over, what chromatid combination(s) will be present at the completion of prophase i?

arsen [322]

Answer

Crossing over is the phenomenon in which exchange of chromtids occur between non sister chromatids and result into recombinant chromatids, which is an important tool for evolution and bring about genetic changes in offsprings as compare to their parents.

No crossing over

If no crossing over occurs, it means no exchange of chromatids between non sister chromatids of homologous chromosomes, then no recombinant chromatids will be formed.

Result

At the end of meiosis II, when four haploid cells are formed, all these cell will contain similar chromosomes as present in parent. Thus chromosomes are non recombinant because of no crossing over.

4 0

3 years ago

The light reaction of photosynthesis does not include

NISA [10]

Answer:

The correct answer will be option-C.

Explanation:

Photosynthesis is a complex process which converts light energy into chemical energy which is used to form the glucose molecule. Photosynthesis occurs in two stages: light-dependent and light-independent reaction.

The light-dependent reaction is the reaction which takes place in the sunlight and converts light energy to chemical energy in ATP and NADPH molecules.

The light-dependent begins when photosystem absorbs light energy which causes the excitation of the electrons provided by chlorophyll molecule. The excited electrons get accepted by electron acceptor molecule and a chain of electron flow begins called electron transport chain.

This creates a scarcity of electron in photosystem which causes hydrolysis of the water molecule as a result oxygen gas is released. The electron flow leads to the synthesis of ATP molecules through chemiosmosis.

Thus, Option-C is the correct answer.

4 0

3 years ago

Hemophilia is an X-linked recessive genetic disorder. A baby girl is found to have inherited the trait from her parents. What ar

sdas [7]

X-linked genes are inherited. The affected girl's father is hemophilic (X-Y), and the mother might be either hemophilic (X-X-) or carrier normal (X+X-).

<h3>What are the X-linked genes?</h3>

These are the genes located in the X séx chromosome and not in the somatic ones.

Traits coded by these genes are inherited. This is, X-linked genes are transmitted from parents to children through generations.

According to this, X-linked genetic disorder will be inherited as well.

Men have a high probability of being affected since they only have one copy of the X chromosome.
In women, the effect of the mutation might be musk in heter0zyg0us state.

Hemophilia is a X-linked recessive genetic disorder.

Let us represent the recessive allele with the symbol -, and the dominant allele with the symbol +.

X- is the chromosome carrying the recessive allele

X+ is the chromosome carrying the dominant allele

For the affection to be expressed, the person must be either,

X-X- ⇒ woman/girl

X-Y ⇒ man/boy

If the baby girl is found to have inherited the trait from her parents, then her genotype is X-X-. She must have received one X- chromosomes from each parent.

Her father provided the X chromosome, so he must be hemophilic (X-Y)

Her mother provided the other X chromosome, but she can be either a carrier (heter0zyg0us, X+X-) or hemophilic (h0m0zyg0us recessive, X-X-).

Options,

Cross 1) affected father x carrier mother

Parentals) X-Y x X+X-

Gametes) X- Y X+ X-

Punnett square) X- Y

X+ X+X- X+Y

X- X-X- X-Y

F1) 1/2 = 50% of the progeny is expected to be healthy (25% X+X- girls + 25% X+Y boys)

1/2 = 50% of the progeny is expected to be hemophilic (25% X-X- girls + 25% X-Y boys)

Cross 2) affected father x affected mother

Parentals) X-Y x X-X-

Gametes) X- Y X- X-

Punnett square) X- Y

X- X-X- X-Y

F1) 100% of the progeny is expected to be hemophilic (50% X-X- girls + 50% X-Y boys)

the phenotype of the father ⇒ hemophilic (X-Y)
the phenotype of the mother ⇒ normal carrier (X+X-) or hemophilic (X-X-)

You can learn more about séx-linked genes at

brainly.com/question/14680914

brainly.com/question/15608757

brainly.com/question/786413

6 0

2 years ago

Explain the role of RNA polymerase in mRNA sythesis

nlexa [21]

It polymerizes RNA by reading on the strands of DNA

4 0

2 years ago