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4 years ago

WILL MARK BRAINLIEST!! I NEED AN ANSWER ASAP PLEASE!!

1 answer:

8 0

1. Binary fission ("division in half") is a kind of asexual reproduction. It is the most common form of reproduction in prokaryotic such as bacteria. It occurs in some single-celled Eukaryotas like the Amoeba and the Paramecium. In binary fission DNA replication and segregation occur simultaneously. In binary fission, the fully grown parent cell splits into two halves, producing two new cells. After replicating its genetic material, the parent cell divides into two equal sized daughter cells. The genetic material is replicated, then equally split. The daughter cells are genetically identical (unless a mutation occurs during replication).

2. Bacterial binary fission is similar in some ways to the mitosis that happens in humans and other Eukaryota. In both cases, chromosomes are copied and separated, and the cell divides its cytoplasm to form two new cells. However, the mechanics and sequence of the two processes are fairly different. For one thing, no mitotic spindle forms in bacteria. Perhaps more importantly, DNA replication actually happens at the same time as DNA separation during binary fission (unlike in mitosis, where DNA is copied during S phase, long before its separation in M phase).

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How can three different types of males evolve in one population?

Harman [31]

Answer:

There are several factors affecting the evolution of one population. Natural selection is one of the factor that influence evolution. It is a process in which an individual organisms undergo certain changes in their traits or phenotypes more likely to survive and reproduce.

So, a population can give rise to different types of male following the process of natural selection. for example : evolution of Pacific Northwest lizards (male side-blotched lizards) into three different throat-color patterns lizards including blue, orange and yellow.

They are evolved according to the reproductive strategy. The natural selection favours orange color lizard and is more dominant than blue and yellow lizard. Blue males have medium size and stronger than yellow while forming bonds with the mates while yellow are the smallest lizard and looks like female which help them to find the mate.

Hence, natural selection support evolution of one population to different types.

5 0

3 years ago

An abnormal increase in the forward curvature of the lower or lumbar spine is known as __ .

Paha777 [63]

Answer:

The correct answer is - Lordosis

Explanation:

Lordosis is characterized as an excessive internal bend of the spine. It varies from the spine's ordinary bends at the cervical, thoracic, and lumbar regions, which are, to some extent, either lordotic (closer to the low back) or kyphotic (close to the neck).

Certain ailment procedures can antagonistically influence the structure of the spine and lead to lordosis.

Thus, the correct answer is - Lordosis

8 0

3 years ago

True or false darwin was looking for a scientific explanation for the diversity of life on earth

jolli1 [7]

True because it makes alot of sense

6 0

3 years ago

Cells can interact with other cells how?

BARSIC [14]

Answer:

Explanation:

A cell can communicate with nearby cells (paracrine signaling) and with cells far away from them (endocrine signaling). These signalings are dependent on the cell membrane receptors on the cell and their response to ligands that bind to them. An example of close cell communication is that of neurotransmitters in neural synapses. An example of cells communicating with faraway cells is that of the pancreas that produces insulin into the blood. The insulin induces other cells across the body to take up glucose.

I hope this helps and that you have a great day! :)

5 0

3 years ago

Read 2 more answers

Magical ability is a dominant trait controlled by two loci. To be able to perform magic, a person would need to carry at least o

dangina [55]

Answer:

b. aaBb x AAbb

Explanation:

According to the information in this question, the trait for magic ability is controlled by two genes, each comprising of two alleles i.e. A,a and B,b. However, to be able to perform magic, a person would need to carry at least one copy of the dominant allele (A and B) on each of the two loci.

Hermione Granger has magical ability but neither one of her parents does. This means that although Hermione can perform magic, none of her parents can. Genetically, it means that Hermione posseses at least one copy of the dominant allele on each of the two loci i.e. her genotype is A_B_.

This is only possible in Hermione if her parents transferred a dominant allele at each loci to her. This means that the possible genotypes for Hermione Granger’s parents are aaBb (no magical ability) x AAbb (no magical ability). See the punnet square attached where the probability of producing offsprings with magical ability is 1/2 or 50%.

4 0

3 years ago