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mart [117]
3 years ago
12

Which two large landmasses formed when Pangaea first started to separate?

Biology
1 answer:
NeTakaya3 years ago
7 0
Laurasia and Gondwanaland!
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True or false: If we extracted DNA from thyroid and neural tissues, we would find the CALCA gene in both types of cells.
Elanso [62]

Answer:

True

Explanation:

The calcitonin/calcitonin gene-related peptide (CALCA) gene is used to encode different peptide sequences (i.e., calcitonin hormone, calcitonin-related peptides and katacalcin) through alternative RNA splicing. These peptides have different functions. Calcitonin is a hormone mainly produced by cells of the thyroid gland, which is involved in the control of levels of calcium and phosphate in the blood. Moreover, katacalcin is a peptide synthesized from the same precursor of calcitonin (and therefore also mainly produced by cells of the thyroid gland), which is implicated in both calcium regulation and skeletal maintenance. Finally, the calcitonin gene-related peptide (CGRP) is a peptide mainly produced by sensory nerves (type Aδ fibers ), which is involved in pain pathways. The CALCA gene has attracted considerable attention from geneticists because it is specifically expressed in neuroendocrine tissues in normal conditions and abnormally induced in septic conditions (i.e., during the body's extreme response to an infection).

6 0
3 years ago
The plasma protein which plays an important role in blood clotting is ____________________.
user100 [1]
Immunoglobins, i believe. :)
7 0
3 years ago
What water temperatures and resulting weather conditions are typically associated with El Niño?
Stels [109]

I think it’s C, bc an El Niño happened in the pacific, with warm water is stopping the cold water from rising.

3 0
4 years ago
Both of tim's parents have brown eyes, but tim has blue eyes. how is this possible? choose the best answer.
Annette [7]
Where are the choices?

the answer could be that both parents are carrying the heterozygous genes. so let's say B is the dominant brown eye gene and b is the recessive blue eye gene. both parents could possess the Bb genotype, and hence by using test cross, Tim was that 25% chance where a child could inherit the bb genotype to have blue eyes
6 0
3 years ago
Read 2 more answers
In one butterfly species, the colors of individuals range from white to black, with many shades of gray in between. If the butte
Klio2033 [76]

Answer: Incomplete dominance

Explanation:

Incomplete dominance describes the force behind the emergence of an heterozygous phenotype (gray-coloured butterflies) as offspring of two contrasting homozygous phenotypes (white-coloured and black-coloured parent butterflies)

Furthermore, incomplete dominance set in when neither of the parent traits is dominant over the other.

Thus, gray-colour appear as an intermediate of the white-colour and black-colour

5 0
3 years ago
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