male affected with haemophilia unaffected male unaffected female Rhesus Rhesus positive negative 4. 7 Rhesus Rhesus Rhesus Rhesus Rhesus positive positive positive positive positive 9 10 11 Rhesus Rhesus Rhesus Rhesus negative positive positive positive 12 Rhesus negative The allele for Rhesus positive, R, is dominant to that for Rhesus negative, r. Haemophilia is a sex-linked condition. The allele for haemophilia, h, is recessive to the allele for normal blood clotting, H, and is carried on the X-chromosome. The diagram shows the Rhesus blood group phenotypes in a family tree where some individuals have haemophilia. Use the information in the diagram to give one piece of evidence that the allele for the Rhesus negative condition is recessive. Explain the evidence from the cross between individuals 3 and 4 that the gene controlling Rhesus blood group is not sex-linked

Short Answer 3. The pedigree shown is of a family with an X-linked recessive disease. The sex chromosomes are indicated. Individual II-2 is the result of a non-disjunction event in one of the parents. I || 1 2 XHXH XhY XhY 12 XhXhY A) If the nondisjunction event that gave rise to Il-2 occurred in the father, in which phase of meiosis did it happen? Explain your reasoning. B) Upon further testing, it is discovered that Individual 1-1 has a mild case of the disease. Please give a short explanation as to how that is possible.

(x-linked genes q2) Please answer this question for me

Please help me with this question. More than one answer may be correct. THe graph relating to the information is included below. In the two figures, a wild-type plant and a plant with a atg5 knockout, which prevents autophagy within the cell, are compared. The first figure shows the number of peroxisomes per micrograph image taken of the plant's leaves. The bottom figure shows a comparison of 3-week seedlings of the wild-type plant and the atg5 plant at normal CO2 levels (360 ppm) and elevated CO2 (2000 ppm) Which of the following are true. Question 20 options: the atg5 knockout plants are more able to deal with photorespiration the atg5 knockout plants are less able to deal with photorespiration the inability to recycle peroxisomes through autophagy impairs a plants ability to deal with photorespiration Elevated CO2 overcomes the photorespiration impairment in atg5 plants Elevated CO2 overcomes the photorespiration impairment in wild-type plants

I'm not sure of these. Any help is appreciated.

Please help, I am confused