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LenaWriter [7]
3 years ago
5

Pollen is produced by the process of A) fertilization. B) meiosis. C) mitosis. D) pollination.

Biology
1 answer:
Cerrena [4.2K]3 years ago
4 0

Answer:

The answer i B meiosis doing the test right now

Explanation:

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How do the process of DNA replication and the laws of inheritance help cells and individuals pass on their
Lapatulllka [165]

Answer/Explanation:

DNA replication doubles each chromosome, meaning the cell can pass on DNA to daughter cells - the duplicated DNA is divided equally between the two new cells formed from the parent.

The laws of inheritance are:

1) The Law of Dominance: An organism with alternate forms of a gene, called alleles, will always display the form that is dominant, masking the recessive trait.

2) The Law of Segregation: In a diploid genome, like most eukaryotes, each trait is defined by a pair of genes (alleles). Each allele is randomly passed on to the gametes so that each gamete only contains one allele.   The offspring inherits one allele from each parent during the process of fertilization.

2) The Law of Independent Assortment: Genes for different traits are sorted independently from one another That is, the inheritance of one trait does not depend on the inheritance of another trait. so that the inheritance of one trait is not dependent on the inheritance of another.

8 0
3 years ago
Skunks often live in burrows that have been dug and abandoned by woodchucks. What type of symbiosis is this?
emmasim [6.3K]

Answer:

B

Explanation:

Commensalism is a type of symbiotic relationship in which one species benefits, while the other species is neither harmed nor helped.

7 0
3 years ago
What is the name of the groove that forms in the middle of a dividing plant cell
mrs_skeptik [129]

Plants have cell walls, so cytokinesis cannot go on with a cleavage furrow, but instead, a cell plate  forms across the cell in the location of the metaphase plate.

There is no distinct groove along the cell plate as the cell divides because of the rigid nature of the cell plate or new cell wall.

A plant cell divides differently from an animal cell which forms a clear cleavage furrow because it only has a flexible cell membrane and not a rigid cell wall like plants.

The cell plate in plant cells is formed by membrane bound vesicles which migrate to the center of the cell where the metaphase plate used to be and fuse together to form a cell plate.

4 0
2 years ago
What important function do the coronary arteries have?
Daniel [21]
<span>Coronary arteries supply blood to the heart muscle.</span>
8 0
3 years ago
Use the mechanisms of meiosis to explain why most mules are sterile.
Tema [17]

Answer:

3. An even number of chromosomes are required for synapsis during prophase I and proper pairing during metaphase

Explanation:

Mules are hybrids of a cross between a female horse and a male donkey. Horses contain 64 chromosomes while donkeys contain 63 chromosomes in their somatic cells respectively. This means that they each produce 32 and 31 chromosomes respectively during meiosis. A mule, hence, contains 32+31= 63 chromosomes in their somatic cells.

This chromosome number in mules are uneven for meiosis to occur because meiotic division requires that an even number of homologous chromosomes pair together in a process called SYNAPSIS during prophase I of meiosis I. This is impossible in a mule because of the uneven number of chromosomes in its cells.

Also, during metaphase of meiosis, the homologous chromosomes need to be properly aligned at the equator for separation to occur. This is also impossible in a mule considering the number of chromosomes that don't add up.

Due to this reason of unevenness in the number of chromosomes present in a mule, meiosis will not occur and if meiosis (gamete formation) does not occur, reproduction cannot take place. Therefore, the mule is a sterile species i.e. cannot produce offsprings via sexual reproduction.

4 0
2 years ago
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