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luda_lava [24]
3 years ago
5

Select the correct answer.

Biology
2 answers:
Marina86 [1]3 years ago
8 0

Answer:

d i just took the test

Explanation:

Nadya [2.5K]3 years ago
6 0

Answer:

D. There's a 50% chance the male will express the recessive trait

Explanation:

Because X is dominant over Xr, a female could not express it in this punnett square because she will have the extra X chromosome. While males do not have the extra X so if they receive the Xr they will have nothing to "cover" them.

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Instructions: Using what you have learned in the lesson and additional research, describe how the theory of evolution is support
olya-2409 [2.1K]

Answer:

fossils depict how our bones have changed from past year to today.

Explanation:

for example, wisdom teeth were use to eat raw meat and crush bones as shown in fossils like Lucy. Another example would be extinct animals preserved, they were not able to survive and adapt to the earths changing conditions.

7 0
3 years ago
Evidence that visual input is routed from the thalamus directly to an emotional control center in the brain has been used to sup
Marina86 [1]
This evidence supports the claim that some emotional reactions may occur without conscious thinking.
Thalamus is a small brain area located above the brain stem, with the main function of sending motor and sensory signals from the spinal cord and the mid-brain structures to the cerebral cortex.

Amygdala is a small brain region, which is part of the limbic system. It is considered the emotional control centre of the brain since it regulates emotions, survival instincts and some memory functions.

It has been proven that visual input is directly sent by the thalamus to the amygdala, which can trigger some emotional responses (such as fear) without any conscious processing.
4 0
3 years ago
Are wings on birds a structural adaptation?
Ksju [112]

Answer:

yes.

Explanation:

5 0
3 years ago
Read 2 more answers
Summers that are hot, humid, and rainy, winters that are below freezing with a lot of snow, 50-100 frost free days/year, and pre
Alex73 [517]

The correct option is D.

The Taiga biome, which is also known as the coniferous forest has been described as the largest terrestrial biome because it extends across some continents of the world. The biome typically has short summers, which can be very wet and winters, which are long and can be very cold. The majority of plants in taiga biome are conifers and these plants are described as ever green because they remain green all year round.

6 0
3 years ago
Read 2 more answers
After doing a genetic analysis on your respective _______, you and your roommate learned that you shared the same maternal ances
Norma-Jean [14]
MRNA is a short lived form of genetic information that is used in transcribing the genetic information, hence it is not very useful for analysis since it is fragile and wrong transcriptions happen quite often. SNPs (Single Nucleotide Polymorphisms) are a form of genetic mutation; they are more frequent than most other mutations since a single transription error may lead to this. While SNPs are important in genetic analysis and getting information about causes of disease, they are not very helpful in determining your maternal lineage. Similarly, while nuclear DNA contains a large portion of our genetic information, half of it is from our fathers and half from our mothers, so the analysis becomes hazy very soon. Mitochondrial DNA instead is directly passed down from mother to her offspring since the embryo contains only the mitochondria of the ovary. Thus, studying differences between mitochondrial DNA, one can gain information about his maternal lineage and go back to Mitochondrial Eve, the person from which all living persons have gotten their mitochondria from. Thus, the correct answer is c.
8 0
3 years ago
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