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irga5000 [103]
3 years ago
13

what are the major evolutionary trends that developed among major vertebrate groups, speciffically those that allowed for the tr

ansition from aquatic to terrestrial life
Biology
1 answer:
Agata [3.3K]3 years ago
3 0
<span>Vertebrates are known to be animals with backbones.  The following are the evolutionary changes of vertebrates:</span>  

*Jaws - Fishes before sucked and rubbed on their preys but now, they already have jaws that enable them to more efficacious in getting their preys.  

*Lungs and limbs - Animals on the sea need to adapt when they look for their preys on land, in turn, they had evolved to acquiring lungs for breathing and limbs for moving.  

*Endothermy - ‘Endo’ meaning internal and ‘therm’ meaning temperature. This gave animals’ bodies heat supply from burning the food they eat. <span> </span>
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Consider the table comparing amphibians and reptiles. Reptiles evolved
bazaltina [42]

Answer:

1) Amphibians have smooth and moist skin while reptiles have dry and scales are present on their skin.

2) Amphibians lay eggs which are very soft so they are covered with a jelly like substance while reptiles also lays egg whose outer covering is tough.

3) Amphibians lays egg in the water while reptiles lays egg on the land.

Examples of amphibians are frog and salamander and examples of reptiles are snake and alligator.

8 0
3 years ago
A certain type of flower has two alleles for color (blue, purple), and two alleles for stem height (tall, short). A tall blue fl
larisa86 [58]

Answer:

Mendel's law of independent assortment

Explanation:

Gregor Mendel is a really important figure in genetics, his work on pea plants provided us with many of the fundamentals of genetics that we still have today!

Mendel proposed 3 laws:

1. The law of dominance - this law states that where there are two different alleles (heterozygous) the organism will always express the dominant trait over the recessive trait

2. The law of segregation - this law states that offspring will inherit one allele from each parent, because allele pairs separate in the process of meiosis, such that each gamete contains 1 allele of each trait. When the zygote is formed, it contains an allele from each parent.

3. The law of independent assortment - this law states that traits are independent from one another at the time of gamete formation. The genes are segregated separately from one another, as the presence of one does not impact the presence of another.

This example shows that all combinations of the height and color allele are possible, and therefore nicely demonstrates the law of independent assortment

6 0
3 years ago
Which describes the chromosomes by the end of prophase II of meiosis?
Rama09 [41]
B because the diploids always line up in the middle on chromosomes
4 0
3 years ago
Read 2 more answers
4. What is an example of positive feedback?
Shtirlitz [24]

Answer:

C

Explanation:

It is known as lactation. The suckling action of an infant produces prolactin, which leads to milk production; more suckling leads to more prolactin, which in turn leads to more lactation. This is a positive feedback system as the product (milk) produces more suckling and more hormone. When the child is no longer breast feeding, the prolactin drops off and milk production goes down.

4 0
3 years ago
All of the ____ and things ____ in a particular area are called an ecosystem<br> fil in the blanks
andrew11 [14]

Answer:

living, nonliving

Explanation:

all living and non living things in an area make up an ecosystem

8 0
3 years ago
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