Cap vo chong II₂ x II₃ sinh ra III₁ bi benh nen benh do gen lan quy dinh,cap vo chong II₂ va II₃ co kieu gen di hop quan sat pha he ta thay rang gen gay benh nam tren NST thuong.

II₂ va II₃ co kieu gen di hop nen III₂ co ti le kieu gen:2/3Aa,1/3AA

Vay xac suat de nguoi III₂ mang gen gay benh la 2/3=0,67 chon C

B=\(\frac{\left(n+1\right)\left(2n+2\right)}{2}\)=(\(\frac{n\left(2n+2\right)+2n+2}{2}\)=\(\frac{2nn+2n+2n+2}{2}\)=\(\frac{2\left(nn+n+n+1\right)}{2}\)=nn+2n+1

Ta co:

Den : trang=3:1 nen den troi hoan toan so voi trang quy uoc A-den,a-trang

Ngan : dai=3:1 nen ngan troi hoan toan so voi dai quy uoc B-ngan,b-dai

F1 co ti le xap xi 9:3:3:1 nen P di hop hai cap gen va co kieu gen AaBb

So do lai:

P: AaBb(den ngan) x AaBb(den ngan)

Gp:1/4AB,1/4Ab 1/4AB,1/4Ab

1/4aB,1/4ab 1/4aB,1/4ab

F1:1/16AABB,2/16AABb,1/16AAbb

2/16AaBB,4/16AaBb,2/16Aabb

1/16aaBB,2/16aaBb,1/16aabb

-Tan so kieu gen dong hop lan gap 2 lan di hop ta co:q²=2x2pq=4q(1-q) tuong duong -5q²+4q=0 vay q=0,8 ; p=0,2

-Tan so kieu gen dong hop lan gap 6 lan di hop ta co:q²=6x2pq=12q(1-q) tuong duong -13q²+12q=0 vay q=0,923 ;p=0,077

a)HT3 ta co:2^kx2n=512 suy ra 2^k=64

Goi x la so te bao con cua hop tu 1 so te bao con cua hop tu 2 la 4x ta co

x*2n+4x*2n=(832-512)=320 suy ra x=8

Vay so te bao con cac hop tu 1,2,3 lan luot la:8,32,64

b)so lan NP cua cac hop tu la:

HT1:2^k=8 suy ra k=3

HT2:2^k=32 suy ra k=5

HT3:2^k=64 suy ra k=6

-P di hop 2 cap gen lai phan tich thu dc f1 :than cao:than thap=1:3 nen chieu cao cay chiu su chi phoi cua quy luat tuong tac cua cac gen khong alen kieu bo tro 9:7 (A-B-than cao con lai than thap) vi vay gen B va D phai nam tren cac cap NST tuong dong khac nhau.

-Nhan thay cay than cao A-B- chiem ti le nho nen giao tu AB la giao tu hoan vi ne cay M co KG di hop tu cheo Ab/aBDd chon cau D

130111 là BOM đấy!

\(1\frac{3}{5}+\left(\frac{\frac{2}{7}+\frac{2}{17}+\frac{2}{37}}{\frac{5}{7}+\frac{5}{17}+\frac{5}{37}}\right)x=\frac{16}{5}\)

\(\Rightarrow\frac{2\left(\frac{1}{7}+\frac{1}{17}+\frac{1}{37}\right)}{5\left(\frac{1}{7}+\frac{1}{17}+\frac{1}{37}\right)}.x=\frac{16}{5}-\frac{8}{5}\)

\(\Rightarrow\frac{2}{5}.x=\frac{8}{5}\)

\(\Rightarrow x=\frac{8}{5}:\frac{2}{5}=4\)

vậy x=4

-Sinh truong la su tang ve kich thuoc khoi luong te bao,co quan va co the cua sinh vat theo thoi gian.

-Phat trien la su bien doi ve hinh thai va sinh li tu hop tu den khi truong thanh

-Moi quan he:

+Sinh truong tao tien de cho phat trien va la thanh phan cua phat trien

+Phat trien thuc day sinh truong

+Toc do sinh truong dien ra khong dong deu o cac giai doan phat trien khac nhau

Thanh phan cau tao axit nucleic cua:

-ADN gom:duong deoxiriboza(C5H10O4),nhom photphat,1 bazo nito(A,T,G,X)

-ARN gom:duong ribozo(C5H10O5), nhom photphat,1 bazo nito(A,U,G,X)