Skin tanning is an example of which adaptation technique?

Biology

1 answer:

Marina CMI [18]3 years ago

5 0

D, because skin tans to help us stand being in the sun without getting burned.

An example of physiological adaption is being able to digest milk. Before, humans were not able to digest milk before we developed enzymes that now make us have the ability to do so, thus allowing us another food source.

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Darla was in an automobile accident that resulted in an injury to her brain. Her sense of touch has been affected. Which part of

Aleksandr-060686 [28]

Answer:

SENSORY CORTEX

Explanation:

The sensory cortex is the part of the brain that works on information referring to touch (called somatosensation) and other sense of feelings.

More specifically, the somatosensory cortex has a responsibility of processing touches in our body

7 0

3 years ago

In pea plants, purple flowers are dominant to white flowers, and the purple and white alleles are represented with P and p, resp

amm1812

Answer: 75% of the plants are purple and 25% are white. The phenotypic ratio can be expressed as 3:1.

Explanation:

Heterozygous means that its genotype has two distinct alleles, i.e. a dominant and a recessive one. So the genotype of the plants is Pp, and each plant has two alleles since they are diploid organisms, which have two copies of each gene.

Each plant produces gametes, which are haploids cells. That is, they only have one copy of each gene (one allele). So, the gametes produced by Pp have a P or p genotype. During fertilization, the maternal and paternal gamete are fused to form a diploid zygote where their genotype will have one allele from the father and one from the mother.

By making this monohybrid cross, we cross the gametes of each parent in the punnett square (see picture)

In the offspring, we see one PP genotype (homozygous dominant), two Pp genotypes (heterozygous) and one pp genotype (homozygous recessive). Since we know the P allele is dominant and it codes for purple color, a genotype only needs one P allele to express that phenotype. So Pp and PP organisms are purple, and only pp is white. That means 75% of the plants are purple and 25% are white. The phenotypic ratio can be expressed as 3:1.