Over the past 12 weeks, a 75-year-old man with a moderate aortic stenosis has developed shortness of breath and chest pains during exertion. He appears pale. Test of his stool for blood is positive. Laboratory studies show the following: hemoglobin 7.2 g/dL, and mean corpuscular volume 75. A blood smear shows microcytic, hypochromic erythrocytes. Which of the following is the most likely diagnosis?

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#Question id: 24565

#Unit 8. Inheritance Biology

A particular trait that are determined by autosomal genes and are inherited according to Mendel’s principles, this particular trait has higher penetrance in one of the sexes is known as

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#Question id: 24566

#Unit 8. Inheritance Biology

In some sheep, the presence of beard is produced by an autosomal allele that is dominant in males and recessive in females. A beard female is crossed with a homozygous beardless male. One of the resulting F1 females is crossed with a beardless male. What proportion of the male and female progeny from this cross will have beard in F2 generation?

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#Question id: 24567

#Unit 8. Inheritance Biology

In goats, a beard is produced by an autosomal allele that is dominant in males and recessive in females. If  cross the beardless female with heterozygous beard male, what will be the proportion of female beard in F1 generation?

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#Question id: 24568

#Unit 8. Inheritance Biology

Male-limited precocious puberty, results from an autosomal dominant allele (P). Males with precocious puberty cross with the normal puberty in female, what will be the probability of precocious puberty in male F1 generation?

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#Question id: 24569

#Unit 10. Ecological Principles

Geometric and the exponential growth both are describe by 

a. similar mathematical models

b. slightly different mathematical models

c. similar  J-shaped growth curve

d. similar S-shaped growth curve

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#Question id: 24570

#Unit 10. Ecological Principles

Geometric growth describes the population growth where is the N0= 100 is the number of females currently in the population,  what is the population size after the five generation if R0= 1.4 ?