If only a single member of a pair of chromosomes is present in a cell, it is a _____ condition and is most likely a ____

Please help me answer these questions!! :) (50 Points) Take your time!!!

PSYCHO15rus [73]

All plants have a life cycle that consists of two distinct forms that differ in size and the number of chromosomes per cell. In flowering plants, the

A hibiscus flower, showing anthers, five stigmas, and pollen.

large, familiar form that consists of roots, shoots, leaves, and reproductive structures (flowers and fruit) is diploid and is called the sporophyte. The sporophyte produces haploid microscopic gametophytes that are dependent on tissues produced by the flower. The reproductive cycle of a flowering plant is the regular, usually seasonal, cycling back and forth from sporophyte to gametophyte.

The flower produces two kinds of gametophytes, male and female. The female gametophyte arises from a cell within the ovule , a small structure within the ovary of the flower. The ovary is a larger structure within the flower that contains and protects usually many ovules. Flowering plants are unique in that their ovules are entirely enclosed in the ovary. The ovary itself is part of a larger structure called the carpel, which consists of the stigma, style, and ovary. Each ovule is attached to ovary tissue by a stalk called the funicle. The point of attachment of the funicle to the ovary is called the placenta.

As the flower develops from a bud, a cell within an ovule called the archespore enlarges to form an embryo-sac mother cell (EMC). The EMC divides by meiosis to produce four megaspores. In this process the number of chromosomes is reduced from two sets in the EMC to one set in the megaspores, making the megaspores haploid. Three of the four megaspores degenerate and disappear, while the fourth divides mitotically three times to produce eight haploid cells. These cells together constitute the female gametophyte, called the embryo sac.

hope it helps

3 0

3 years ago

Can sex-linked traits have more than two phenotypes?

ludmilkaskok [199]

yes

Explanation:

Since a female has two X chromosomes, she will have two copies of each X-linked gene.

5 0

3 years ago

Why are modern homes more likely to have higher indoor pollution? A. They use kerosene heaters B. They use asbestos to prevent f

valkas [14]

Modern homes are more likely to have higher indoor pollution because D. <span>They are tightly sealed from the outside</span>

7 0

3 years ago

Read 2 more answers

Which statement decribes enzemye

Amanda [17]

An Enzyme is a molecule that acts as a metabolic catalyzer to speed up reactions throughout the body.

<em>"Although I could not locate the statements online to provide an exact answer, allow me to provide a general overview of the description and functions of an enzyme</em>."

As stated, an Enzyme is a metabolic catalyzer. What this means is that they are used to greatly speed up metabolic reactions in an organism. Enzymes are an essential part of any organism. They provide us with the ability to digest certain elements, absorb nutrients, undergo liver functions, and much more. Each enzyme has a specific substrate to which they bond and they are essential to all functions in the human body.

Some factors that may affect enzymes are:

pH levels
Temperature
Salt concentrations
Water concentrations

and so on.

Enzymes have a set range of conditions in which they will function optimally. Each enzyme can differ in the conditions it prefers for optimal functionality, however, as a general rule, we can say that under extreme conditions such as very low pH levels or salt concentrations surpassing 2.5%, enzymes will denaturalize, losing their basic structure and the ability to catalyze reactions.

To learn more visit:

brainly.com/question/25358394

8 0

3 years ago

Explain why bacteria are the most important part of the nitrogen cycle

slava [35]

Because before this stage has happened plants can not absorb nitrogen thought here roots which plants need nitrogen to stay healthy

7 0

3 years ago

If only a single member of a pair of chromosomes is present in a cell, it is a _____ condition and is most likely a _____ cell.

If only a single member of a pair of chromosomes is present in a cell, it is a _ condition and is most likely a _ cell.