Ask question

Ask question

All categories

Zielflug [23.3K]

3 years ago

12

In Drosophila melanogaster the recessive alleles for brown and scarlet eyes (of two independent genes) produce a novel phenotype

so that bw/bw;st/st is white. If a pure-breeding brown is crossed to a pure-breeding scarlet, what proportion of the F2 will be white

1 answer:

o-na [289]3 years ago

6 0

HEHEHEHEHEHEHEHDHDHHDHD

You might be interested in

What evidence do we get from fossils?

Oksanka [162]

Answer: This evidence reveals what our planet was like long ago. Fossils also show how animals changed over time and how they are related to one another.

Explanation:

4 0

3 years ago

Based on the number of offspring they produce at one time organisms are classified into two categories many offspring at once an

Shtirlitz [24]

Full question:

Drag each label to the correct location on the chart. Based on the number of offsprings they produce at one time, organisms are classified into two categories many offsprings at once and a few at a time. Sort the characteristics based on the category they describe.

A.Low percentage of offspring reach adulthood,

B.limited parental involvement,

C.High percentage of offspring reach adulthood,

D.Rapid maturation,

E.Parental care observed,

few offspring at once vs many offspring at once.

Answer:

At the same time, there are a few offspring

C. A high proportion of offspring grow up to be adults.

E. Observed parental care,

At the same time, many offspring

A. Only a small fraction of offspring grow up to be adults.

B. minimal parental participation;

D. Rapid maturation.

Few offspring at a time have a high percentage of offspring reaching adulthood. If a large percentage of offspring reach adulthood, the offspring are likely to be few and well cared for.

<h3>What is parental care?</h3>

Parental care is seen to be unique to only a few offspring at a time. If the parents provide good care to their children, the offspring are likely to be few. It will be easier for the parent organism to care for a small number of children at once.

Many offspring at once have a low percentage of offspring reaching adulthood. Because there are so many kids at once, competition for room and food, as well as a lack of care, only a small percentage of them will reach adulthood.

Many offspring have limited parental participation at the same time. Because there were so many kids at the same time, the competition for parental care among the offspring would be strong. The parents' organism will be unable to care for the large number of children.

Rapid maturation is unique to several offspring at the same time. In order to survive, the organism will have to mature quickly. Due to the large number of children, survival will be determined by the fittest. The ability of the children to mature quickly will be aided by the survival of the fittest trait.

For more information regarding adulthood, visit:

brainly.com/question/938949

#SPJ1

5 0

2 years ago

I REALLY NEED HELP PLEASE AND THANK YOU!!! I WILL LOVE YOU FOREVERRR!!!

nasty-shy [4]

Answer: Mitosis is a type of cell division in which one cell (the mother) divides to produce two new cells (the daughters) that are genetically identical to itself. In the context of the cell cycle, mitosis is the part of the division process in which the DNA of the cell's nucleus is split into two equal sets of chromosomes.

The great majority of the cell divisions that happen in your body involve mitosis. During development and growth, mitosis populates an organism’s body with cells, and throughout an organism’s life, it replaces old, worn-out cells with new ones. For single-celled eukaryotes like yeast, mitotic divisions are actually a form of reproduction, adding new individuals to the population.

In all of these cases, the “goal” of mitosis is to make sure that each daughter cell gets a perfect, full set of chromosomes. Cells with too few or too many chromosomes usually don’t function well: they may not survive, or they may even cause cancer. So, when cells undergo mitosis, they don’t just divide their DNA at random and toss it into piles for the two daughter cells. Instead, they split up their duplicated chromosomes in a carefully organized series of steps.

5 0

3 years ago

_____ that are not reabsorbed drift out of the synaptic gap, through diffusion. This is how the synaptic gap is cleared, in prep

BigorU [14]

Answer;

-Nuerotransmitters

Neurotransmitters that are not reabsorbed drift out of the synaptic gap, through diffusion. This is how the synaptic gap is cleared, in preparation for the next release of a new batch of these chemical messengers.

Explanation;

-The majority of neurotransmitters drift across the synaptic gap and come into contact with receptor sites of the receiving neurons dendrites. Receptor site is the location where neurotransmitters attach on the receiving side of the synaptic gap. Because there are a variety of neurotransmitters a variety of receptor sites also exist.

-It is necessary for the right neurotransmitter to fit a corresponding receptor site to convey the message.

-When the neuro transmitters latch onto the receptors of the dendrites of the receiving neuron tiny gates in the receiving cells membrane fly open ushering positively charged particles into the cell and restarting the cycle of action potential.

-The firing of one neuron contributes to the potential for neighboring neurons to fire as a result of its chemical message. Reuptake process by which neurotransmitters are reabsorbed by the sending terminal bud. Neurotransmitters that are not reabsorb drift out of the synaptic gap through diffusion

6 0

3 years ago

All the biological macromolecules contain Carbon, hydrogen and oxygen. However, most do not contain nitrogen. The category that

Olenka [21]

The biomolecules that contain nitrogen are protein and nucleic acids.

3 0

3 years ago

Read 2 more answers