26. a. Females would be healthier in an area with malaria because they have two X chromosomes. The genetic mutation for favism is only passed on the X chromosomes, so because females have two, this means that in populations where the mutation is widespread, many females have a red blood supply that is half G6PD deficient and half normal. So, this gives females extra protection against malaria, while they also won’t have a dangerous reaction to fava beans.
b. People of Mediterranean descent would be healthiest in comparison to those of African descent. Favism is most common in North Africa, Southern Europe, and concentrated all throughout the Mediterranean, which are the same areas where fava beans are historically cultivated and consumed. Due …show more content…
Methylation explains how one identical twin gets cancer yet the other does not because it explains how the same set of genes can produce different results depending on which genes have or have not undergone methylation. This occurs because genetic instructions are not unchangeable as we thought, but instead the DNA can remain the same while some genes are switched on or off.
33. We think that epigenetics can allow a grandmother to influence her grandchild’s DNA because we know that environmental factors and factors from the mother come into play when the baby is developing inside the mother. But for females, they are born with a full set of eggs that she will have for life. So, that means that the eggs the grandchild developed from were created in its mother’s ovaries when the mother was still in her mother’s womb. This means that when the grandmother was passing epigenetic signals to the mother, these signals were also passed to you, the egg that was already formed in the baby.
34. The Hayflick limit is the limit to the amount of times cells divide for cellular reproduction. For humans, the limit to the number of divisions is between 52 and 60, but varies depending on the organism. The limit is related to the loss of telomeres, which are buffers that sit at the end of …show more content…
Depending on the area of the world where the humans lived, they evolved to have dark or light skin; dark if they had plenty vitamin D, light if they didn’t have enough. This difference has led to many different tones of skin from very light to very dark, creating a large diversity across the planet that in the past aided the survival of our ancestors.
Big Idea 2: Pages 2-3
With hemochromatosis, the body fails to correctly get rid of extra iron in order to achieve and maintain dynamic homeostasis. Without hemochromatosis, the body utilizes its free energy and molecular building blocks to reduce the amount of iron absorbed by the intestines from food once its recognizes it has sufficient amounts of iron. With the disease, it fails to do this, leading to unhealthy buildup of iron throughout the body.
Big 3: Page 158
During pregnancy, the mother sends important nutrients to the baby in order for its survival, but she also sends information to the baby’s cells that have the potential to switch genes on or off. With methylation, the gene expression changes while the DNA doesn’t, which can potentially aid or hurt the baby later in
b. People of Mediterranean descent would be healthiest in comparison to those of African descent. Favism is most common in North Africa, Southern Europe, and concentrated all throughout the Mediterranean, which are the same areas where fava beans are historically cultivated and consumed. Due …show more content…
Methylation explains how one identical twin gets cancer yet the other does not because it explains how the same set of genes can produce different results depending on which genes have or have not undergone methylation. This occurs because genetic instructions are not unchangeable as we thought, but instead the DNA can remain the same while some genes are switched on or off.
33. We think that epigenetics can allow a grandmother to influence her grandchild’s DNA because we know that environmental factors and factors from the mother come into play when the baby is developing inside the mother. But for females, they are born with a full set of eggs that she will have for life. So, that means that the eggs the grandchild developed from were created in its mother’s ovaries when the mother was still in her mother’s womb. This means that when the grandmother was passing epigenetic signals to the mother, these signals were also passed to you, the egg that was already formed in the baby.
34. The Hayflick limit is the limit to the amount of times cells divide for cellular reproduction. For humans, the limit to the number of divisions is between 52 and 60, but varies depending on the organism. The limit is related to the loss of telomeres, which are buffers that sit at the end of …show more content…
Depending on the area of the world where the humans lived, they evolved to have dark or light skin; dark if they had plenty vitamin D, light if they didn’t have enough. This difference has led to many different tones of skin from very light to very dark, creating a large diversity across the planet that in the past aided the survival of our ancestors.
Big Idea 2: Pages 2-3
With hemochromatosis, the body fails to correctly get rid of extra iron in order to achieve and maintain dynamic homeostasis. Without hemochromatosis, the body utilizes its free energy and molecular building blocks to reduce the amount of iron absorbed by the intestines from food once its recognizes it has sufficient amounts of iron. With the disease, it fails to do this, leading to unhealthy buildup of iron throughout the body.
Big 3: Page 158
During pregnancy, the mother sends important nutrients to the baby in order for its survival, but she also sends information to the baby’s cells that have the potential to switch genes on or off. With methylation, the gene expression changes while the DNA doesn’t, which can potentially aid or hurt the baby later in