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Softa [21]
3 years ago
8

A chromosomal alteration in which one or more

Biology
1 answer:
tekilochka [14]3 years ago
5 0
It’s non disjunction
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How does karyogram B differ from karyogram a
alukav5142 [94]
Answer:

They differ in sex chromosomes.

Explanation:

There are two types of chromosomes; autosomes(22 pairs) and sex chromosomes(1 pair).
While all the autosomes are same in the case of both male and female humans, sex chromosomes differ.
Human male has one X and one Y chromosome, while human female has two X chromosomes. Y is roughly shorter by half than the X chromosome. 

6 0
3 years ago
Which of the following is a major trend in land plant evolution? Group of answer choices the trend toward a gametophyte-dominate
Leviafan [203]

Answer:

trend toward a sporophyte-dominated life cycle

the trend toward larger gametophytes

Explanation:

<em>The major trend in the evolution of land plants is the domination of the sporophytic phase in the life cycle and alternation of generation. It also moves towards a larger gametophytes</em>

In lower plants, the gameophyte phase was dominant in the life cycle while in bryophyte, both gametophyte and sporophyte phase are co-dependent.

The sporophyte phase is the diploid phase while the gametophyte phase is the haploid phase.

Also, the gameotyptic stages are quite microscopic (usually in the form of spores) in lower plants while they become bigger in land plants (in the form of ovary and pollen) although with fewer cells.

8 0
3 years ago
Many of the responses to stress are attributed to activation of the sympathetic nervous system and are mediated by a. glucagon.
faust18 [17]

Answer:

d. <em>norepinephrine</em>

Explanation:

<em>epinephrine</em> and <em>nor-epinephrine</em> work together and control the sympathetic receptors that are present within the cardiovascular system of body.

7 0
3 years ago
Read 2 more answers
Convection _______.
FrozenT [24]

Answer:

The answer is 1: Occurs in fluids.

Explanation:

Convection happens when a lot of heat in fluids/gas move and/or take the place of particles with less heat.

3 0
3 years ago
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Cystic fibrosis is a genetic disorder. It is a recessive trait that is determined by two alleles. Suppose two parents each carry
poizon [28]

Answer:

Option C

Explanation:

The child may or may not have the disease because a recessive gene from each parent may be passed on.

7 0
3 years ago
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